In a certain reaction, 10% of the reactant decomposes in one hour, 20% in two hours, 30% in three hours, and so on. The dimension of the velocity constant (rate constant) are

Options

A. `hr^(-1)`
B. mol `L^(-1) hr^(-1)`
C. L `mol^(-1) s^(-1)`
D. `mol s^(-1)`

Answer

B

Explanation

From the question it clear `t_(1//2) prop` a hence zero order reaction so dimension of k = mol `L^(-1) hr^(-1)`
If `t=t_(20%)=20` min x=20 then `k =20/20=1 mol L^(-1) t^(-1)`
Similarly for 30% and so on Thus so on thus reaction is of zero order