At a certain temperature, initial rate data for the decomposition of gaseous N_2

Question

At a certain temperature, initial rate data for the decomposition of gaseous N_2O_ are as follows: What is the rate law? Race = k[N_2O_] Rate = k[N_2O_]^2 Rate = k[N_2]^2[O_2]^2 Rate = k[N_2] What is the value of the rate constant, including the proper units? Express your answer to two significant figures and include the appropriate units. k = 1.7 times 10^-3 What is the initial rate of decomposition of N_2O_ when its initial concentration is 1.0 times 10^-2 M? Express your answer to two significant figures and include the appropriate units.

Explanation / Answer

C)

initial rate of N2O5

when

[N2O5] = 1*10^-2

so...

if rate law is

Rate = k*[N2O5]

and

k = 1.7*10^-3

then

Rate = (1.7*10^-3)(10^-2) = 0.000017 M/s

note that your units must be M/s, since molarity is changing per unit time

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