MHT CET 2024 Chemistry question
Initial concentration of reactant in a first order reaction is What concentration would remain after 40 minute ?
Answer: (C)
Solution
The question gives directly the ratio of the initial to the remaining concentration after 40 min: . Hence [A]_t = \dfrac{[A]_0}{5.00} = \dfrac{0.08\ \mathrm{mol\,dm^{-3}}}{5.00} = 0.016\ \mathrm{mol\,dm^{-3}}. So (C). (The rate
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