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 react, on that follows the general rate law. Rate what will happen to the rate of reaction the concentration of A it increased by a factor of 3.00? The rate will decrease 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 the rate law: Rate = 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 Older or reunion with respect to ion OH^-? Which statement below regarding the half-life of a zeroth-order reaction is trunk Each half-life is four time long at the preceding half-lift the half-life. Each half-life is four time long at the preceding half-lift the half-life Which statement below regarding the half-life of a zeroth-order reaction is true? 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? The rate constant k for a first-order reaction is equal to 4.2 x 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 x 10^3 s

Explanation / Answer

Initial conc = 2 M

Final conc= 0.5 M

For first order reaction,

0.5 = 2 *exp(-k*t)

k =(-1/t)* ln(0.5/2)

= (-1/2880)*ln(0.25)

= 4.82*10-4 s-1

Option (D)

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