Molecular hydrogen can be made from methane gas by the reaction below. How is th

Question

Molecular hydrogen can be made from methane gas by the reaction below. How is the rate of disappearance of CH_4 related to the rate of appearance of H_2? For a reaction that follows the general rate law, Rate = k [A] [B]^2, what will happen to the rate of reaction if the concentration of A is increased by a factor of 3.00? The rate will decrease by a factor of 1/9.00. Decrease by a factor of 1/3.00. Increase by a factor of 9.00. Increase by a factor of 3.00. What is the overall reaction order for the reaction that has law: Rate = k [H_2] [NO]^2? zero order first order second order third order the following set of data was obtained by the method of initial rates for the reaction: What is the order of reaction with respect to ion, OH^-? Zero first second none of these Which statements below regarding the half-life of a zeroth-order reaction is true? Each half-life is four times as long as the preceding half-life. The half-life remains unchanged throughout the course of the reaction. Each half-life is half as long as the preceding half-life. Each half-life is twice as long as the preceding half-life. For a particular first-order reaction, it takes 2880 seconds for the concentration of the reactant to decrease from 2.0 M to .50 M. What is the value for rate constant (in s^-1) for the reaction? 2.9 times 10^-2 s^-1 1.0 times 10^-4 s^-1 6.0 times 10^-3 s^-1 4.8 times 10^-4 s^-1 the rate constant, k for a first-order reaction is equal to 4.2 times 10^-4 s^-1. What is the half-life for the reaction? 2.9 times 10^-4 s 1.7 times 10^3 s 1.2 times 10^3 s 2.4 times 10^3 s

Explanation / Answer

5]

Which statement below regarding the half life of zeroth-order reaction is true

Answer is A

Each half-life is half as long as the preceding half-life.

For zero order reactions the rate is independent of the starting concentration so if the initial concentration is higher it takes longer to lose half of it

7]

The rate constant k for a first order reaction is equal to 4.2 * 10^-4 s^-1. what is the half life for the reaction

Answer is B

1.7 x 10^3 s

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