Question

In the case of a zero-order reaction, the ratio of time required for $75$% completion to $50$ % completion is:

• A. $ln2$
• B. $2$
• C. $1.5$
• D. none

Answer 1

Answer: (C)

$1.5$

Its a Zero Order Reaction,

Time required for 75% completion

$t_1=\frac{100-25}{2k}$ = $\frac{75}{2k}$

Time required for 50% completion

$t_2=\frac{100-50}{2k}$ = $\frac{50}{2k}$

The Ratio of times = $1.5$