Kiseline i baze su svuda oko nas - od limuna... Show more
Hemija
Srpski jezik
Istorija
MatematikaSign up to see the contentIt's free!
Access to all documents
Improve your grades
Join milions of students
344
•
Updated Apr 8, 2026
•
Definicije kiselina i baza: Arenijusova teorija
1 / 5
Šta su kiseline i baze po Arenijusu
Zamisli da si detektiv koji mora da prepozna kiseline i baze samo gledajući kako se ponašaju u vodi. Arenijusova teorija ti daje jednostavne "otiske prstiju" za svaku grupu.
Kiseline su supstance koje se u vodi razlažu i oslobađaju vodоnikove jone (H⁺). Misli na njih kao na "davaoce vodonika" - kada stavimo HCl u vodu, on se raspada na H⁺ i Cl⁻ jonе.
Baze rade suprotno - one u vodi oslobađaju hidroksidne jone (OH⁻). NaOH se u vodi deli na Na⁺ i OH⁻ jone.
💡 Zapamti: Proces kada se jedinjenje deli na jone u vodi zove se elektrolitička disocijacija. To je kao kada se tim raspada na pojedinačne igrače!
Kako kiseline funkcionišu
Sve Arenijusove kiseline rade po istom principu - kao mašine koje "izbacuju" H⁺ jone u vodu. Opšta formula je jednostavna: HA → H⁺ + A⁻.
Najvažnije jake kiseline koje trebaš da znaš:
- Hlorovodonična (HCl) - imaš je u želucu: HCl → H⁺ + Cl⁻
- Sumporna (H₂SO₄) - u akumulatorima: H₂SO₄ → 2H⁺ + SO₄²⁻
- Azotna (HNO₃): HNO₃ → H⁺ + NO₃⁻
Primetićeš da sumporna kiselina daje dva H⁺ jona jer ima dva atoma vodonika u formuli. Upravo ti slobodni H⁺ joni čine da kiseline imaju kiseo ukus i menjaju lakmus u crveno.
💡 Trik za prepoznavanje: Ako formula počinje sa H, verovatno je kiselina!
Kako baze funkcionišu
Arenijusove baze su "fabrike" za OH⁻ jone. Kad se rastopе u vodi, dele se prema formuli: MOH → M⁺ + OH⁻.
Ključne jake baze koje ćеš sresti na testovima:
- Natrijum-hidroksid (NaOH) - "živa soda": NaOH → Na⁺ + OH⁻
- Kalijum-hidroksid (KOH): KOH → K⁺ + OH⁻
- Kalcijum-hidroksid Ca(OH)₂ - "gašeni kreč": Ca(OH)₂ → Ca²⁺ + 2OH⁻
Kod kalcijum-hidroksida imaš dva OH⁻ jona, pa kalcijum mora imati naelektrisanje 2+ da bi se sve izbalansiralo. OH⁻ joni daju bazama gorčinu i čine da se lakmus ofarba plavo.
💡 Prepoznavanje baza: Ako formula se završava sa OH, to je Arenijusova baza!
Primeri i rešavanje zadataka
Evo kako da rešavaš tipične zadatke korak po korak. Fosforna kiselina (H₃PO₄) ima tri H atoma, što znači da će dati tri H⁺ jona: H₃PO₄ → 3H⁺ + PO₄³⁻.
Amonijak (NH₃) je zanimljiv slučaj - jeste baza, ali nije Arenijusova baza! Nema OH grupu u formuli, pa ne može da je "izbaci" u vodi. Ovo je jedno od ograničenja ove teorije.
Kada balansiraš jednačine, uvek proveri naelektrisanja. Za Ca(OH)₂ → Ca²⁺ + 2OH⁻: levo imaš 0, desno (+2) + 2(-1) = 0 ✓
Zapamti da H⁺ jon u stvarnosti ne postoji sam - vezuje se za vodu i pravi hidronijum jon (H₃O⁺), ali za tvoj nivo je dovoljno da koristiš H⁺.
💡 Test trik: Arenijusova teorija važi samo u vodi! Bez vode, nema disocijacije na jone.
Pregled i priprema za test
Da bi savladao ovu oblast, fokusiraj se na prepoznavanje i pisanje jednačina. Kiseline uvek daju H⁺, baze uvek daju OH⁻ - jednostavno!
Ključne jednačine za učење:
- HCl → H⁺ + Cl⁻ (jedna od najčešćih na testovima)
- H₂SO₄ → 2H⁺ + SO₄²⁻ (pazi na dvojku!)
- NaOH → Na⁺ + OH⁻
- Ca(OH)₂ → Ca²⁺ + 2OH⁻
Strategija za test: Prvo pogledaj formulu - počinje li sa H (kiselina) ili se završava sa OH (baza)? Zatim napiši disocijaciju i proveri da li se naelektrisanja slažu.
💡 Za odličan: Elektrolitička disocijacija je proces deljenja na jone, elektroliti su supstance koje provode struju jer se dele na jone. Ovi pojmovi često "kače" na testovima!
We thought you’d never ask...
What is the Knowunity AI companion?
Our AI companion is specifically built for the needs of students. Based on the millions of content pieces we have on the platform we can provide truly meaningful and relevant answers to students. But its not only about answers, the companion is even more about guiding students through their daily learning challenges, with personalised study plans, quizzes or content pieces in the chat and 100% personalisation based on the students skills and developments.
Where can I download the Knowunity app?
You can download the app in the Google Play Store and in the Apple App Store.
Is Knowunity really free of charge?
That's right! Enjoy free access to study content, connect with fellow students, and get instant help – all at your fingertips.
Most popular content in Hemija
Most popular content
Can't find what you're looking for? Explore other subjects.
Students love us — and so will you.
4.6/5
App Store
4.7/5
Google Play
The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.
Stefan S
iOS user
This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.
Samantha Klich
Android user
Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.
Anna
iOS user
I think it’s very much worth it and you’ll end up using it a lot once you get the hang of it and even after looking at others notes you can still ask your Artificial intelligence buddy the question and ask to simplify it if you still don’t get it!!! In the end I think it’s worth it 😊👍 ⚠️Also DID I MENTION ITS FREEE YOU DON’T HAVE TO PAY FOR ANYTHING AND STILL GET YOUR GRADES IN PERFECTLY❗️❗️⚠️
Thomas R
iOS user
Knowunity is the BEST app I’ve used in a minute. This is not an ai review or anything this is genuinely coming from a 7th grade student (I know 2011 im young) but dude this app is a 10/10 i have maintained a 3.8 gpa and have plenty of time for gaming. I love it and my mom is just happy I got good grades
Brad T
Android user
Not only did it help me find the answer but it also showed me alternative ways to solve it. I was horrible in math and science but now I have an a in both subjects. Thanks for the help🤍🤍
David K
iOS user
The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!
Sudenaz Ocak
Android user
In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.
Greenlight Bonnie
Android user
I found this app a couple years ago and it has only gotten better since then. I really love it because it can help with written questions and photo questions. Also, it can find study guides that other people have made as well as flashcard sets and practice tests. The free version is also amazing for students who might not be able to afford it. Would 100% recommend
Aubrey
iOS user
Best app if you're in Highschool or Junior high. I have been using this app for 2 school years and it's the best, it's good if you don't have anyone to help you with school work.😋🩷🎀
Marco B
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE Knowunity AI. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮
Elisha
iOS user
This app is phenomenal down to the correct info and the various topics you can study! I greatly recommend it for people who struggle with procrastination and those who need homework help. It has been perfectly accurate for world 1 history as far as I’ve seen! Geometry too!
Paul T
iOS user
The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.
Stefan S
iOS user
This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.
Samantha Klich
Android user
Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.
Anna
iOS user
I think it’s very much worth it and you’ll end up using it a lot once you get the hang of it and even after looking at others notes you can still ask your Artificial intelligence buddy the question and ask to simplify it if you still don’t get it!!! In the end I think it’s worth it 😊👍 ⚠️Also DID I MENTION ITS FREEE YOU DON’T HAVE TO PAY FOR ANYTHING AND STILL GET YOUR GRADES IN PERFECTLY❗️❗️⚠️
Thomas R
iOS user
Knowunity is the BEST app I’ve used in a minute. This is not an ai review or anything this is genuinely coming from a 7th grade student (I know 2011 im young) but dude this app is a 10/10 i have maintained a 3.8 gpa and have plenty of time for gaming. I love it and my mom is just happy I got good grades
Brad T
Android user
Not only did it help me find the answer but it also showed me alternative ways to solve it. I was horrible in math and science but now I have an a in both subjects. Thanks for the help🤍🤍
David K
iOS user
The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!
Sudenaz Ocak
Android user
In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.
Greenlight Bonnie
Android user
I found this app a couple years ago and it has only gotten better since then. I really love it because it can help with written questions and photo questions. Also, it can find study guides that other people have made as well as flashcard sets and practice tests. The free version is also amazing for students who might not be able to afford it. Would 100% recommend
Aubrey
iOS user
Best app if you're in Highschool or Junior high. I have been using this app for 2 school years and it's the best, it's good if you don't have anyone to help you with school work.😋🩷🎀
Marco B
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE Knowunity AI. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮
Elisha
iOS user
This app is phenomenal down to the correct info and the various topics you can study! I greatly recommend it for people who struggle with procrastination and those who need homework help. It has been perfectly accurate for world 1 history as far as I’ve seen! Geometry too!
Paul T
iOS user
Definicije kiselina i baza: Arenijusova teorija
Kiseline i baze su svuda oko nas - od limuna koji jedemo do sapuna kojim se umivamo. Da biste razumeli kako ove supstance funkcionišu, potrebno je da savladate Arenijusovu teoriju, koja objašnjava njihovo ponašanje u vodi.
Šta su kiseline i baze po Arenijusu
Zamisli da si detektiv koji mora da prepozna kiseline i baze samo gledajući kako se ponašaju u vodi. Arenijusova teorija ti daje jednostavne "otiske prstiju" za svaku grupu.
Kiseline su supstance koje se u vodi razlažu i oslobađaju vodоnikove jone (H⁺). Misli na njih kao na "davaoce vodonika" - kada stavimo HCl u vodu, on se raspada na H⁺ i Cl⁻ jonе.
Baze rade suprotno - one u vodi oslobađaju hidroksidne jone (OH⁻). NaOH se u vodi deli na Na⁺ i OH⁻ jone.
💡 Zapamti: Proces kada se jedinjenje deli na jone u vodi zove se elektrolitička disocijacija. To je kao kada se tim raspada na pojedinačne igrače!
Sign up to see the contentIt's free!
Access to all documents
Improve your grades
Join milions of students
Kako kiseline funkcionišu
Sve Arenijusove kiseline rade po istom principu - kao mašine koje "izbacuju" H⁺ jone u vodu. Opšta formula je jednostavna: HA → H⁺ + A⁻.
Najvažnije jake kiseline koje trebaš da znaš:
- Hlorovodonična (HCl) - imaš je u želucu: HCl → H⁺ + Cl⁻
- Sumporna (H₂SO₄) - u akumulatorima: H₂SO₄ → 2H⁺ + SO₄²⁻
- Azotna (HNO₃): HNO₃ → H⁺ + NO₃⁻
Primetićeš da sumporna kiselina daje dva H⁺ jona jer ima dva atoma vodonika u formuli. Upravo ti slobodni H⁺ joni čine da kiseline imaju kiseo ukus i menjaju lakmus u crveno.
💡 Trik za prepoznavanje: Ako formula počinje sa H, verovatno je kiselina!
Sign up to see the contentIt's free!
Access to all documents
Improve your grades
Join milions of students
Kako baze funkcionišu
Arenijusove baze su "fabrike" za OH⁻ jone. Kad se rastopе u vodi, dele se prema formuli: MOH → M⁺ + OH⁻.
Ključne jake baze koje ćеš sresti na testovima:
- Natrijum-hidroksid (NaOH) - "živa soda": NaOH → Na⁺ + OH⁻
- Kalijum-hidroksid (KOH): KOH → K⁺ + OH⁻
- Kalcijum-hidroksid Ca(OH)₂ - "gašeni kreč": Ca(OH)₂ → Ca²⁺ + 2OH⁻
Kod kalcijum-hidroksida imaš dva OH⁻ jona, pa kalcijum mora imati naelektrisanje 2+ da bi se sve izbalansiralo. OH⁻ joni daju bazama gorčinu i čine da se lakmus ofarba plavo.
💡 Prepoznavanje baza: Ako formula se završava sa OH, to je Arenijusova baza!
Sign up to see the contentIt's free!
Access to all documents
Improve your grades
Join milions of students
Primeri i rešavanje zadataka
Evo kako da rešavaš tipične zadatke korak po korak. Fosforna kiselina (H₃PO₄) ima tri H atoma, što znači da će dati tri H⁺ jona: H₃PO₄ → 3H⁺ + PO₄³⁻.
Amonijak (NH₃) je zanimljiv slučaj - jeste baza, ali nije Arenijusova baza! Nema OH grupu u formuli, pa ne može da je "izbaci" u vodi. Ovo je jedno od ograničenja ove teorije.
Kada balansiraš jednačine, uvek proveri naelektrisanja. Za Ca(OH)₂ → Ca²⁺ + 2OH⁻: levo imaš 0, desno (+2) + 2(-1) = 0 ✓
Zapamti da H⁺ jon u stvarnosti ne postoji sam - vezuje se za vodu i pravi hidronijum jon (H₃O⁺), ali za tvoj nivo je dovoljno da koristiš H⁺.
💡 Test trik: Arenijusova teorija važi samo u vodi! Bez vode, nema disocijacije na jone.
Sign up to see the contentIt's free!
Access to all documents
Improve your grades
Join milions of students
Pregled i priprema za test
Da bi savladao ovu oblast, fokusiraj se na prepoznavanje i pisanje jednačina. Kiseline uvek daju H⁺, baze uvek daju OH⁻ - jednostavno!
Ključne jednačine za učење:
- HCl → H⁺ + Cl⁻ (jedna od najčešćih na testovima)
- H₂SO₄ → 2H⁺ + SO₄²⁻ (pazi na dvojku!)
- NaOH → Na⁺ + OH⁻
- Ca(OH)₂ → Ca²⁺ + 2OH⁻
Strategija za test: Prvo pogledaj formulu - počinje li sa H (kiselina) ili se završava sa OH (baza)? Zatim napiši disocijaciju i proveri da li se naelektrisanja slažu.
💡 Za odličan: Elektrolitička disocijacija je proces deljenja na jone, elektroliti su supstance koje provode struju jer se dele na jone. Ovi pojmovi često "kače" na testovima!
We thought you’d never ask...
What is the Knowunity AI companion?
Our AI companion is specifically built for the needs of students. Based on the millions of content pieces we have on the platform we can provide truly meaningful and relevant answers to students. But its not only about answers, the companion is even more about guiding students through their daily learning challenges, with personalised study plans, quizzes or content pieces in the chat and 100% personalisation based on the students skills and developments.
Where can I download the Knowunity app?
You can download the app in the Google Play Store and in the Apple App Store.
Is Knowunity really free of charge?
That's right! Enjoy free access to study content, connect with fellow students, and get instant help – all at your fingertips.
3
Smart Tools NEW
Transform this note into: ✓ 50+ Practice Questions ✓ Interactive Flashcards ✓ Full Practice Test ✓ Essay Outlines
Practice Test
Quiz
Flashcards
Essay
Most popular content in Hemija
Most popular content
Can't find what you're looking for? Explore other subjects.
Students love us — and so will you.
4.6/5
App Store
4.7/5
Google Play
The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.
Stefan S
iOS user
This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.
Samantha Klich
Android user
Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.
Anna
iOS user
I think it’s very much worth it and you’ll end up using it a lot once you get the hang of it and even after looking at others notes you can still ask your Artificial intelligence buddy the question and ask to simplify it if you still don’t get it!!! In the end I think it’s worth it 😊👍 ⚠️Also DID I MENTION ITS FREEE YOU DON’T HAVE TO PAY FOR ANYTHING AND STILL GET YOUR GRADES IN PERFECTLY❗️❗️⚠️
Thomas R
iOS user
Knowunity is the BEST app I’ve used in a minute. This is not an ai review or anything this is genuinely coming from a 7th grade student (I know 2011 im young) but dude this app is a 10/10 i have maintained a 3.8 gpa and have plenty of time for gaming. I love it and my mom is just happy I got good grades
Brad T
Android user
Not only did it help me find the answer but it also showed me alternative ways to solve it. I was horrible in math and science but now I have an a in both subjects. Thanks for the help🤍🤍
David K
iOS user
The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!
Sudenaz Ocak
Android user
In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.
Greenlight Bonnie
Android user
I found this app a couple years ago and it has only gotten better since then. I really love it because it can help with written questions and photo questions. Also, it can find study guides that other people have made as well as flashcard sets and practice tests. The free version is also amazing for students who might not be able to afford it. Would 100% recommend
Aubrey
iOS user
Best app if you're in Highschool or Junior high. I have been using this app for 2 school years and it's the best, it's good if you don't have anyone to help you with school work.😋🩷🎀
Marco B
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE Knowunity AI. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮
Elisha
iOS user
This app is phenomenal down to the correct info and the various topics you can study! I greatly recommend it for people who struggle with procrastination and those who need homework help. It has been perfectly accurate for world 1 history as far as I’ve seen! Geometry too!
Paul T
iOS user
The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.
Stefan S
iOS user
This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.
Samantha Klich
Android user
Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.
Anna
iOS user
I think it’s very much worth it and you’ll end up using it a lot once you get the hang of it and even after looking at others notes you can still ask your Artificial intelligence buddy the question and ask to simplify it if you still don’t get it!!! In the end I think it’s worth it 😊👍 ⚠️Also DID I MENTION ITS FREEE YOU DON’T HAVE TO PAY FOR ANYTHING AND STILL GET YOUR GRADES IN PERFECTLY❗️❗️⚠️
Thomas R
iOS user
Knowunity is the BEST app I’ve used in a minute. This is not an ai review or anything this is genuinely coming from a 7th grade student (I know 2011 im young) but dude this app is a 10/10 i have maintained a 3.8 gpa and have plenty of time for gaming. I love it and my mom is just happy I got good grades
Brad T
Android user
Not only did it help me find the answer but it also showed me alternative ways to solve it. I was horrible in math and science but now I have an a in both subjects. Thanks for the help🤍🤍
David K
iOS user
The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!
Sudenaz Ocak
Android user
In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.
Greenlight Bonnie
Android user
I found this app a couple years ago and it has only gotten better since then. I really love it because it can help with written questions and photo questions. Also, it can find study guides that other people have made as well as flashcard sets and practice tests. The free version is also amazing for students who might not be able to afford it. Would 100% recommend
Aubrey
iOS user
Best app if you're in Highschool or Junior high. I have been using this app for 2 school years and it's the best, it's good if you don't have anyone to help you with school work.😋🩷🎀
Marco B
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE Knowunity AI. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮
Elisha
iOS user
This app is phenomenal down to the correct info and the various topics you can study! I greatly recommend it for people who struggle with procrastination and those who need homework help. It has been perfectly accurate for world 1 history as far as I’ve seen! Geometry too!
Paul T
iOS user