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Chemistry · 2024 · 2 marks
Haloalkanes and HaloarenesChemical Reactions of Haloalkanes and Haloarenes2 marksUnderstandvery short answer
CBSE 2024 · Region 3 · Set 1 · Q20
(a) Which halogen compound in the following pair will react faster in S_N 2 reactions and why? CH_3- CH_2- I OR CH_3- CH_2- Br (b) Why is chloroform…
(a)
Which halogen compound in the following pair will react faster in $\displaystyle \mathrm{S}_{\mathrm{N}} 2$ reactions and why? \[\mathrm{CH}_{3}-\mathrm{CH}_{2}-\mathrm{I} \quad \mathrm{OR} \quad \mathrm{CH}_{3}-\mathrm{CH}_{2}-\mathrm{Br} \]
(b)
Why is chloroform stored in closed dark coloured bottles ?
Marking-scheme solution
(a)
\(\displaystyle \mathrm{CH}_{3}-\mathrm{CH}_{2}-\mathrm{I}\), As iodide is a better leaving group / due to larger size of I.
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CBSE Class 12 Chemistry past-paper question from the 2024 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.