For a first-order reaction A → products, three solutions are taken with different concentrations and dilutions. Find correct order of reaction rates.

Solution:

For first-order reaction:

Rate ∝ Concentration

Solutions 1 and 2 have same concentration, so rates are equal.

Solution 3 is diluted, so concentration decreases and rate becomes smaller.

Correct Order:

r₁ = r₂ > r₃

Correct Answer: Option (3)