The rate constant for a first order reaction is `6.93 xx 10^(-2) mi n^(-1)`. How long will it take a1M solution to be reduced to 0.5 M?

Options

A. 600 min
B. 6 hr
C. 600 sec
D. 10 sec

Explanation

For 1 order, `t= 2.303/k log. (a)/(a-x)`
`= 2.303/(6.93 xx 10^(-2)mi n^(-1))xx log. (1)/0.5`
`= (2.303 xx 0.6990)/(6.93 xx 10^(-2)min`
= 10 min = 600 sec.