Question

The equation that describes mathematically the dependence of the rate of reaction on concentration terms of reactants is ____ or ______ .

Answer 1

The representation of rate of reaction in terms of the concentration of the reactants is called the rate law. It can only be established by experiments.

Rate law is the mathematical equation in which the rate of reaction is expressed in terms of the product of molar concentrations of reactants, with each term raised to the power.

This power may or may not be the same as the stoichiometric coefficient of the reactant in a balanced chemical equation.

The rate law for the following reaction can be given as:

$2\mathrm{HF}\left(\mathrm{g}\right)\rightleftharpoons {\mathrm{H}}_2\left(\mathrm{g}\right)+{\mathrm{F}}_2\left(\mathrm{g}\right)$
Rate law expression= $\mathrm{k}{\left[\mathrm{HF}\right]}^2$

Therefore, The equation that describes mathematically the dependence of the rate of reaction on concentration in terms of reactants is rate law or rate equation.