7. Substances P and Q react together to form products and the overall order of the reaction is three. Which of the following rate equations could not be correct and why? A rate = k [P]2 [Q] D rate = k [P][Q]³ E rate = K[P][Q]²[H*]° B rate= k [P] [Q]³ C rate = k [P] [Q]² 2.1, 2.2 L3 8. The reaction between three reactants A, B and C was studied. The initial rates of reaction at different concentrations of the three reactants were measured and are given in the following table: [A]/mol dm3 [B]/mol dm3 [C]/mol dm-3 1.0 3.0 3.0 1.0 experiment 1 2 a) b) c) 3 4 1.0 1.0 2.0 2.0 1.0 1.0 1.0 2.0 Deduce the partial orders of reaction with respect to A, B and C. Calculate the value of the rate constant, giving its units. Write the rate equation. Initial rate/mol dm³ s-1 2.3x10-3 6.9×10-3 1.4×10-² 4.6×10-3 21.2.2L3

7. Substances P and Q react together to form products and the overall order of the reaction is three. Which of the following rate equations could not be correct and why? A rate = k [P]2 [Q] D rate = k [P][Q]³ E rate = K[P][Q]²[H*]° B rate= k [P] [Q]³ C rate = k [P] [Q]² 2.1, 2.2 L3 8. The reaction between three reactants A, B and C was studied. The initial rates of reaction at different concentrations of the three reactants were measured and are given in the following table: [A]/mol dm3 [B]/mol dm3 [C]/mol dm-3 1.0 3.0 3.0 1.0 experiment 1 2 a) b) c) 3 4 1.0 1.0 2.0 2.0 1.0 1.0 1.0 2.0 Deduce the partial orders of reaction with respect to A, B and C. Calculate the value of the rate constant, giving its units. Write the rate equation. Initial rate/mol dm³ s-1 2.3x10-3 6.9×10-3 1.4×10-² 4.6×10-3 21.2.2L3

Chemistry: The Molecular Science

5th Edition

ISBN:9781285199047

Author:John W. Moore, Conrad L. Stanitski

Publisher:John W. Moore, Conrad L. Stanitski

Chapter11: Chemical Kinetics: Rates Of Reactions

Section11.7: Reaction Mechanisms

Problem 11.12E

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