(a)
Interpretation: The reason behind the given statements being false is to be stated.
Concept introduction: The energy that should be available to a system for a
(b)
Interpretation: The reason behind the given statements being false is to be stated.
Concept introduction: The energy that should be available to a system for a chemical reaction to take place is known as the activation energy for that system. The relation between the reaction rate and the concentration of the reactants is stated by the rate law.
(c)
Interpretation: The reason behind the given statements being false is to be stated.
Concept introduction: The energy that should be available to a system for a chemical reaction to take place is known as the activation energy for that system. The relation between the reaction rate and the concentration of the reactants is stated by the rate law.
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Chemistry: An Atoms First Approach
- Nitrogen dioxide reacts with carbon monoxide by the overall equation NO2(g)+CO(g)NO(g)+CO2(g) At a particular temperature, the reaction is second order in NO2 and zero order in CO. The rate constant is 0.515 L/(mol s). How much heat energy evolves per second initially from 3.50 L of reaction mixture containing 0.0275 M NO2? See Appendix C for data. Assume the enthalpy change is constant with temperature.arrow_forwardExplain what is meant by the average rate of a reaction.arrow_forward11.102 Suppose that you are studying a reaction and need to determine its rate law. Explain what you would need to measure in order to accomplish this in a single experiment, and how you could use graphical methods to get from the experimental data to a complete rate law.arrow_forward
- Consider a hypothetical reaction between A and B: A + B products Use the following initial rate data to calculate the rate constant for this reaction. [A] (mol/L) [B] (mol/L) Initial Rate (mol/L s) 0.20 1.0 3.0 0.50 1.0 11.8 2.0 2.0 189.5arrow_forwardThe rate law for a reaction can be determined only from experiment and not from the balanced equation. Two experimental procedures were outlined in Chapter 11. What are these two procedures? Explain how each method is used to determine rate laws.arrow_forwardA friend of yours states, A balanced equation tells us how chemicals interact. Therefore, we can determine the rate law directly from the balanced equations. What do you tell your friend?arrow_forward
- The type of rate law for a reaction, either the differential rate law or the integrated rate law, is usually determined by which data is easiest to collect. Explain.arrow_forwardIsomerization of CH3NC occurs slowly when CH3NC is heated. CH3NC(g) CH3CN(g) To study the rate of this reaction at 488 K, data on [CH3NC] were collected at various times. Analysis led to the following graph. (a) What is the rate law for this reaction? (b) What is the equation for the straight line in this graph? (c) Calculate the rate constant for this reaction. (d) How long does it take for half of the sample to isomerize? (e) What is the concentration of CH3NC after 1.0 104 s?arrow_forward. Account for the increase in reaction rate brought about by a catalyst.arrow_forward
- If the reaction:A+BC+D is designated as first order, the rate depends on: a.the concentration of only one reactant. b.the concentration of each reactant. c.no specific concentration. d.the temperature only.arrow_forwardA study of the rate of dimerization of C4H6 gave the data shown in the table: 2C4H6C8H12 (a) Determine the average rate of dimerization between 0 s and 1600 s, and between 1600 s and 3200 s. (b) Estimate the instantaneous rate of dimerization at 3200 s from a graph of time versus [C4H6]. What are the units of this rate? (c) Determine the average rate of formation of C8H12 at 1600 s and the instantaneous rate of formation at 3200 s from the rates found in parts (a) and (b).arrow_forwardCompare the functions of homogeneous and heterogeneous catalysts.arrow_forward
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