Question

In experiment (I), what time will reactant (X) take to be reduced into 0.0425 M? (in hr) (write the value to the nearest integer)

Answer 1

a = 0.17 M, (a -x) = 0.0425 M
$t=\frac{2.3}{0.294}h{r}^{-1}$ log $\frac{0.17}{0.0425}$
$=\frac{2.3}{0.294}$ log 4 $\frac{2.3}{0.294}\times 0.6=4.7hr$.