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Chemistry · 2022 · 2 marks
CBSE 2022 · Region 1 · Set 2 · Q1
(a) A reaction is second order in X and first order in Y. How is the rate affected when the concentrations of both X and Y are doubled? (b) Write the…
(a)
A reaction is second order in X and first order in Y. How is the rate affected when the concentrations of both X and Y are doubled ?
(b)
Write the units of 'k' for
(i)
zero order reaction
(ii)
first order reaction
Marking-scheme solution
(a) Rate becomes $\displaystyle 8$ times
(b) (i) \(\displaystyle \mathrm{mol} \mathrm{L}^{-1}\) time \(\displaystyle { }^{-1} / \mathrm{mol} \mathrm{L}^{-1} \mathrm{~s}^{-1}\)
(ii) time \(\displaystyle { }^{-1} / \mathrm{s}^{-1}\)
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CBSE Class 12 Chemistry past-paper question from the 2022 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.