TS EAMCET · Chemistry · Chemical Kinetics
The first order decomposition of \(\mathrm{H}_2 \mathrm{O}_2\) in an appropriate medium is characterised by a rate constant of \(0.2303 \mathrm{~min}^{-1}\). What is the time (in min) required to complete \(9 / 10\) fraction of the reaction?
- A \(0.1\)
- B \(10\)
- C \(100\)
- D \(0.01\)
Answer & Solution
Correct Answer
(B) \(10\)
Step-by-step Solution
Detailed explanation
Given, rate constant \((k)\) for first order \(=0.2303 \mathrm{~min}^{-1}\). For first order reaction, Time \((t)=\frac{2.303}{k} \log \left[\frac{a}{a-x}\right]\) where, \(a=\) initial concentration Let, initial concentration \((a)=1\) \(x=\frac{9}{10}\) then,…
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