The exponents in the rate-law must match the coefficients in the balanced chemical equation for the reaction. If the exponents in the rate-law do not match the coefficients in the balanced chemical equation, then we know that the reaction takes place in one step. If the exponents in the rate-law do not match the coefficients in the balanced equation, then we know that the reaction does not take place in one step. The rate-law for a reaction can be predicted from the balanced chemical equation.

The exponents in the rate-law must match the coefficients in the balanced chemical equation for the reaction. If the exponents in the rate-law do not match the coefficients in the balanced chemical equation, then we know that the reaction takes place in one step. If the exponents in the rate-law do not match the coefficients in the balanced equation, then we know that the reaction does not take place in one step. The rate-law for a reaction can be predicted from the balanced chemical equation.

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

Section: Chapter Questions

Problem 1QRT

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Rate law experiments dont always give data in the form of a rate in moles per second. Some of them give an amount of time necessary for a reaction to proceed to a given point. The faster the rate, the less time necessary. For the following data, assume that the time given is to react 0.10M of A. Determining the complete rate law for the reaction A+Bproducts. Time taken (s) [A] [B] 36.8 0.20 0.40 25.0 0.20 0.60 10.0 0.50 0.60 A classic chemical reaction/demonstration called the iodine clock reaction is usually measured this way.
Explain what is meant by the average rate of a reaction.
. Account for the increase in reaction rate brought about by a catalyst.
When phenacyl bromide and pyridine are both dissolved in methanol, they react to form phenacylpyridinium bromide. When equal concentrations of reactants were mixed in methanol at 35 C, these data were obtained: (a) Determine the rate law for this reaction. (b) Determine the overall order of this reaction. (c) Determine the rate constant for this reaction. (d) Determine the rate constant for this reaction when the concentration of each reactant is 0.030 mol/L.
For the reaction of phenyl acetate with water the concentration as a function of time was given in Question 11. Assume that the concentration of water does not change during the reaction. Analyze the data from Question 11 to determine (a) the rate law. (b) the order of the reaction with respect to phenyl acetate. (c) the rate constant. (d) the rate of reaction when the concentration of phenyl acetate is 0.10 mol/L (assuming that the concentration of water is the same as in the experiments in the table in Question 11).
Define these terms: (a) unimolecular reaction (b) bimolecular reaction (c) elementary reaction (d) overall reaction