Answer to Question #134926 in Physical Chemistry for harinath

Question

A reaction (A- product) is found to be second order in nature. find out its rate constant given the fact that 0.04M of reactants decreases to 0.005M in 10 minutes.

Answer 1

Ans.

Rate equation of a second order reaction having initial concentration of the reactant [R]₀  and after time t concentration becomes [R] and the rate constant is k

1/[R]=kt+1/[R]₀

For present reaction, [R] = 0.005M, [R]₀  = 0.04 M, t = 10 minutes,

Putting these values,

k = 17.5 M⁻¹·min⁻¹ (Ans.)