The decomposition of H2O2 can be followed by titration with KMnO4 and is found to be a first order r

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The decomposition of H2O2 can be followed by titration with KMnO4 and is found to be a first order reaction. The rate constant is 4.5 × 10−2. In an experiment, the initial titre value was 25 ml. The titre will be 5 ml after

Accepted Answer

$Kt = \ln\frac{\left\lbrack H_{2}O_{2} ightbrack_{0}}{\left\lbrack H_{2}O_{2} ightbrack_{t}} = \ln\frac{V_{0}}{V_{t}}$$	herefore t = \frac{1}{4.5 	imes 10^{- 2}	ext{ min}}.\ln\frac{25}{2} = \frac{\ln 5}{4.5 	imes 10^{- 2}}	ext{ min}$

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