Answer:
The correct answer option A.
Explanation:
The reaction rate is determined experimentally for different concentrations of the reactants. These data indicate that by changing the concentration of Nh4 + or NO2-, the reaction rate changes. If the concentration of Nh4 + is doubled, keeping constant at NO2- the reaction rate is doubled, and if the concentration of that same reactant is changed by a factor of 4, it is quadrupled, and so on. If the concentration of NO2- is now modified in the same way as the previous one, it is observed that it also changes the reaction rate in this way. And he overall dependence of the reaction on the concentration will be the same for both reactants.
Therefore the reaction rate is proportional to the concentration of Nh4 + and NO2-.
