The reaction of ammonium ion with nitrite ion in aqueous solution

NH4+ + NO2- → N2 + 2 H2O is first order in NH4+ and second order overall.

Complete the rate law for this reaction. Use the form k[A]m[B]n... , where '1' is understood for m, n ... (don't enter 1) and concentrations taken to the zero power do not appear.

Rate = k[NH4+][NO2-]

Explanation:

The rate law is the equation that relates the rate of chemical reaction with the concentration or pressure of the reactants. For the above reaction between ammonium ion and nitrite ion in a solution, the rate is dependent on the availability of reactants in the solution.

The ammonium ion is first order and the overall order is second and the rate law is hence written as,

R = k [NH4+][NO2-]