Question

H3AsO4 + 3I−+ 2 H3O+ H3AsO3 + I3− + H2O

Answer 1

Answer:

• (A) 1

Explanation:

In a chemical reaction, the order of reaction with respect to one species is the exponent of the species in the rate law.

The experimental rate law of the reaction is:

        $rate=k[H_3AsO_4]\cdot [I^-]\cdot[H_3O^+]$

That means:

• k is the rate constant

• $[H_3AsO_4]$, $[I^-]$ , and $[H_3O^+]$ are the concentrations of the reactants

• The exponents are 1, 1, and 1.

• Thus, the order of the reaction with respect to each species is 1.

• The overall order is the sum of the exponents: 1 + 1 + 1 = 3.

In conclusion, the order of reaction with respect to  $[I^-]$ is 1.