Chemistry - Chemical Kinetics Question with Solution | TestHub

$\mathrm{l}\mathrm{o}\mathrm{g}\frac{2\times {10}^4}{1.5\times {10}^4}=\frac{{\mathrm{ℇ}}_{\mathrm{A}}}{2\times 2.303}\left(\frac{1}{300}-\frac{1}{400}\right)$

$\mathrm{l}\mathrm{o}\mathrm{g}2=\frac{{\mathrm{ℇ}}_{\mathrm{A}}}{2.303\times 2}\left(\frac{100}{400\times 300}\right)$

${\mathrm{ℇ}}_{\mathrm{A}}=0.3010\times 2.303\times 2\times 1200$

$=1663.68\mathrm{ }\mathrm{C}\mathrm{a}\mathrm{l}$

$=1.663\times {10}^3\mathrm{ }\mathrm{C}\mathrm{a}\mathrm{l}$