$\left[\right.$ આપેલ છે $\left.: \log _{10} 2=0.301, \ln 10=2.303\right]$
\(K =\frac{2.303}{ t } \cdot \log \frac{\left[ A _{0}\right]}{\left[ A _{ t }\right]}=\frac{2.303}{570 sec } \cdot \log \left(\frac{100}{32}\right)\)
\(=1.999 \times 10^{-3} sec ^{-1} \approx 2 \times 10^{-3} sec ^{-1}\)