Question

The unit of rate constant is per second, the order of reaction is ______.

Options

• Zero

• First

• Second

• Third

Answer 1

The unit of rate constant is per second, the order of reaction is first.

Explanation:

If the unit of rate constant is per second (s⁻¹), the reaction is of first order.
For a first-order reaction, rate = k[A], so the unit of k becomes s⁻¹.