Question

Compound A decomposes to compounds B and C on heating at 500 K according to the chemical equation: 2𝐴 + 𝐵 → 2𝐶 The reaction is first order and the rate constant is 2.17 x 10-5 s -1 . a) Calculate the fraction of A remaining after it has been heated for 30 minutes. b) What is the time (in minutes) required for 50% of the sample to be decomposed under the same conditions?

Answer 1

a) Fraction of A remaining=$\frac {3}{8}$

b) 178.5 minutes