MCQ
The rate constant is doubled when temperature increases from $27\,^oC$ to $37\,^oC.$ Activation energy in $kJ$ is
- A$34$
- ✓$54$
- C$100$
- D$50$
If $\frac{{{K_2}}}{{{K_1}}} = 2$
$\log 2 = \frac{{{E_a}}}{{2.303 \times 8.314}}\left[ {\frac{1}{{300}} - \frac{1}{{310}}} \right]$
${E_a} = .3010 \times 2.303 \times 8.314\left( {\frac{{300 \times 310}}{{10}}} \right)$
$ = 53598.59\;J\,mo{l^{ - 1}}$
$ = 54\;kJ$.
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$\mathrm{C}_{7} \mathrm{H}_{8} \stackrel{3 \mathrm{Cl}_{2} / \Delta}{\longrightarrow} \mathrm{A} \stackrel{\mathrm{Br}_{2} / \mathrm{Fe}}{\rightarrow} \mathrm{B} \stackrel{\mathrm{Zn} / \mathrm{HCl}}{\rightarrow} \mathrm{C}$
The product '$C$' is