Chemistry-Rate of Reaction

NEET Chemistry Rate of Reaction MCQ Question

Type: MCQ-numerical-Medium-Class 12

For the reaction 2A → Products, if the concentration of A decreases from 0.5 mol L⁻¹ to 0.4 mol L⁻¹ in 10 minutes, what is the average rate of reaction in mol L⁻¹ s⁻¹?

A

67 × 10⁻³ mol L⁻¹ s⁻¹

B

00 × 10⁻³ mol L⁻¹ s⁻¹

C

67 × 10⁻² mol L⁻¹ s⁻¹

D

67 × 10⁻⁴ mol L⁻¹ s⁻¹

Correct Answer

Option A

Detailed Explanation

The average rate of reaction is calculated by the change in concentration divided by the time interval. The concentration change is 0.1 mol L⁻¹ in 10 minutes. Converting 10 minutes into seconds gives 600 seconds. Thus, the rate = (0.1 mol L⁻¹) / (600 s) = 1.67 × 10⁻³ mol L⁻¹ s⁻¹.

Found an issue with this question?