Ammonium Ion (NH₄⁺)reacts with Nitrite Ion (NO₂^-)to Yield Nitrogen Gas

Ammonium ion (NH₄⁺) reacts with nitrite ion (NO₂^-) to yield nitrogen gas and liquid water. The following initial rates of reaction have been measured for the given reactant concentrations. Which of the following is the rate law (rate equation) for this reaction?

A) rate = k [NH₄⁺] [NO₂^-]⁴
B) rate = k [NH₄⁺] [NO₂^-]
C) rate = k [NH₄⁺] [NO₂^-]²
D) rate = k [NH₄⁺]² [NO₂^-]
E) rate = k [NH₄⁺]^1/2 [NO₂^-]^1/4