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Concentrations and Elementary Reactions (5.3, 5.4)
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5.3 Concentration changes over Time. *order of a reaction can be inferred from a graph of concentration of reactant versus time units: Differentiated Rate Law - compares change in concentration. to rate (time is held constant) Integrated Rate Law -change in time to concentration. Zero Order First Order Second Order [A] k=-m Time Rate: [A]₁₂-[A] = -kt InCAT k=-m Time In [A]₁₂-\n [A] ₁₂ = -kt I [A] k=m Time 1 1 = kt [A] [A]o Lmol's or MS-¹ life increases mol LS or MS-¹ S- life decreases. ½ life is constant Half Life= the time it takes for a radioactive sample to decay to half its original amount +₁=0.693 k 5.4 Elementary Reactions. elementary rxn = process in chemical rxn that occurs in a Single event or step *overall chemical reaction cludes one or more elementary ryns. •rate law for elementary rxn can be inferred from stoichiometry of molecules in collision reaction mechanism = process by which a reaction occurs EX) rxn occurs according to 3 step mechanism: Step 1: A+ ATE Step 2: +3D+F Step 3: D+BE+F *C & D are INTERMEDIATES Overall: a) write rate law for each elementary step Step 1: rate=K[A] ² Step2 rate= K[C] [B] Step 3:ratek [D] [B] b)what is overall chemical equation for the reaction? 2A + 2B → E + 2 F
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Differential rate law, integrated rate law, zero first and second order graphs, half life, elementary reactions, reaction mechanisms
Differential rate law, integrated rate law, zero first and second order graphs, half life, elementary reactions, reaction mechanisms
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5.3 Concentration changes over Time. *order of a reaction can be inferred from a graph of concentration of reactant versus time units: Differentiated Rate Law - compares change in concentration. to rate (time is held constant) Integrated Rate Law -change in time to concentration. Zero Order First Order Second Order [A] k=-m Time Rate: [A]₁₂-[A] = -kt InCAT k=-m Time In [A]₁₂-\n [A] ₁₂ = -kt I [A] k=m Time 1 1 = kt [A] [A]o Lmol's or MS-¹ life increases mol LS or MS-¹ S- life decreases. ½ life is constant Half Life= the time it takes for a radioactive sample to decay to half its original amount +₁=0.693 k 5.4 Elementary Reactions. elementary rxn = process in chemical rxn that occurs in a Single event or step *overall chemical reaction cludes one or more elementary ryns. •rate law for elementary rxn can be inferred from stoichiometry of molecules in collision reaction mechanism = process by which a reaction occurs EX) rxn occurs according to 3 step mechanism: Step 1: A+ ATE Step 2: +3D+F Step 3: D+BE+F *C & D are INTERMEDIATES Overall: a) write rate law for each elementary step Step 1: rate=K[A] ² Step2 rate= K[C] [B] Step 3:ratek [D] [B] b)what is overall chemical equation for the reaction? 2A + 2B → E + 2 F
5.3 Concentration changes over Time. *order of a reaction can be inferred from a graph of concentration of reactant versus time units: Differentiated Rate Law - compares change in concentration. to rate (time is held constant) Integrated Rate Law -change in time to concentration. Zero Order First Order Second Order [A] k=-m Time Rate: [A]₁₂-[A] = -kt InCAT k=-m Time In [A]₁₂-\n [A] ₁₂ = -kt I [A] k=m Time 1 1 = kt [A] [A]o Lmol's or MS-¹ life increases mol LS or MS-¹ S- life decreases. ½ life is constant Half Life= the time it takes for a radioactive sample to decay to half its original amount +₁=0.693 k 5.4 Elementary Reactions. elementary rxn = process in chemical rxn that occurs in a Single event or step *overall chemical reaction cludes one or more elementary ryns. •rate law for elementary rxn can be inferred from stoichiometry of molecules in collision reaction mechanism = process by which a reaction occurs EX) rxn occurs according to 3 step mechanism: Step 1: A+ ATE Step 2: +3D+F Step 3: D+BE+F *C & D are INTERMEDIATES Overall: a) write rate law for each elementary step Step 1: rate=K[A] ² Step2 rate= K[C] [B] Step 3:ratek [D] [B] b)what is overall chemical equation for the reaction? 2A + 2B → E + 2 F
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I love this app so much [...] I recommend Knowunity to everyone!!! I went from a C to an A with it :D
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SuSSan, iOS User