Question

Rate constant of reaction is mole dm⁻³ sec⁻¹, the order of reaction will be ______.

Options

• Zero

• one

• 1.5

• 2

Answer 1

Rate constant of reaction is mole dm⁻³ sec⁻¹, the order of reaction will be zero.

Explanation:

In a zero-order reaction, the rate is independent of the concentration of reactants, so the units for the rate constant (k) are the same as the units for the reaction rate mol dm⁻³ s⁻¹ (or M/s). This follows the general units formula (M)¹⁻ⁿ . s⁻¹, where n = 0.