The reaction of ammonium ion with nitrite ion in aqueous solution

NH4+ + NO2- N2 + 2 H2O

is first order in NH4+ and first order in NO2-.

Complete the rate law for this reaction in the box below.
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 =

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In an experiment to determine the rate law, the rate of the reaction was determined to be 1.97E-5 Ms-1 when [NH4+] = 0.652 M and [NO2-] = 8.60E-2 M. From this experiment, the rate constant is
M-1s-1.