Question

Consider the following reaction: 2NH3(g)-->N2(g)+3H2(g). A) Express the relative rate of the reaction with respect to each reactant and product. B)if the rate of production of H2 is 2.9•10^-6 Ms^-1 what is the rate of the reaction? Chemistry

Answer 1

Consider,

`2NH_3(g) to N_2(g) + 3H_2(g)`

Relating the stoichiometry as a function of time equivalates the rates of disappearance and appearance, like so,

`-(Delta[NH_3])/(2Deltat) = (Delta[N_2])/(Deltat) = (Delta[H_2])/(3Deltat)`

With the former equivalency, we can prove the rate of the reaction.

Hence,

If `Deltat=1"s"`,

`(2.9*10^-6"M")/(3"s") approx (9.67*10^-7"M")/"s"`

is the approximate rate of this elementary reaction.

To be sure, the rate of appearance of hydrogen gas is approximately equal to three times the rate of the reaction.