For the reaction shown below if the concentration of KCN is increased four times, the rate of the reaction… · ABC26OR0831
Subject: Organic Chemistry · Chapter: Reagents, Reaction Mechanisms & Named Reactions · Topic: Reagents, Reaction Mechanisms & Named Reactions – General · Exam: JAM 2005-2022 · Marks: 2 · Difficulty: Medium
For the reaction shown below if the concentration of KCN is increased four times, the rate of the reaction will be : 
$+$ KCN 
$+$ KCl
$+$ KCN $+$ KCl(a)doubled
(b)increased four times
(c)unaffected
(d)halved
Answer
Answer: C ✓ checked by 4AB · confidence high
Explanation
The tertiary benzylic chloride ionises by SN1 in aqueous MeOH. The rate depends only on the substrate, so [KCN] has no effect (c).
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