The rate constant for the first order decomposition of H2O2 is given by the following equation- log k -14-2- 1-0- 10 4 TCalculate Ea for this reaction and rate constant k if its half-life period be 200 minutes- Given- R-8-314 J K-1mol-1

log k = log A E_a2.303 RT #160; 14.2 1.0 × 10^4T= #160;log A E_a2.303 RT 1.0 × 10^4 = #160;E_a19.14 E_a = 19.14 × 10^4 Jmol^ = ...

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Standard XII

Chemistry

Rate Constant

The rate cons...

Question

The rate constant for the first order decomposition of $H_{2} O_{2}$ is given by the following equation:
$log k = 14.2 - \frac{1.0 \times 10^{4}}{T}$
Calculate $E_{a}$ for this reaction and rate constant $k$ if its half-life period be $200$ minutes. (Given: $R = 8.314 J K^{- 1} {m o l}^{- 1}$ )

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Solution

$l o g k = l o g A - \frac{E_{a}}{2.303 R T}$
$14.2 - \frac{1.0 \times 10^{4}}{T} = l o g A - \frac{E_{a}}{2.303 R T}$
$1.0 \times 10^{4} = \frac{E_{a}}{19.14}$
$E_{a} = 19.14 \times 10^{4} J m o l^{-} = 191.4 K J m o l^{-}$

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Q. The rate constant for the first order decomposition of

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