Question

Sucrose decomposes in acid solution into glucose and fructose according to the first order rate law, with t_1/2 = 3.00 hours. What fraction of sample of sucrose remains after 8 hours?

Answer 1

For a first order reaction,

It is given that, t_1/2 = 3.00 hours

Therefore,

= 0.231 h⁻¹

Then, 0.231 h⁻¹

Hence, the fraction of sample of sucrose that remains after 8 hours is 0.158.