General Organic Chemistry Question 37
Question 37 - 2024 (30 Jan Shift 2)
The correct stability order of carbocations is
(1) $\left(\mathrm{CH}{3}\right){3} \mathrm{C}^{+}>\mathrm{CH}{3}-\stackrel{+}{\mathrm{C}} \mathrm{H}{2}>\left(\mathrm{CH}{3}\right){2} \stackrel{+}{\mathrm{C}} \mathrm{H}>\stackrel{+}{\mathrm{C}} \mathrm{H}_{3}$
(2) $\stackrel{+}{\mathrm{C}} \mathrm{H}{3}>\left(\mathrm{CH}{3}\right){2} \stackrel{+}{\mathrm{C}} \mathrm{H}>\mathrm{CH}{3}-\stackrel{+}{\mathrm{C}} \mathrm{H}{2}>\left(\mathrm{CH}{3}\right)_{3} \stackrel{+}{\mathrm{C}}$
(3) $\left(\mathrm{CH}{3}\right){3} \stackrel{+}{\mathrm{C}}>\left(\mathrm{CH}{3}\right){2} \stackrel{+}{\mathrm{C}} \mathrm{H}>\mathrm{CH}{3}-\stackrel{+}{\mathrm{C}} \mathrm{H}{2}>\stackrel{+}{\mathrm{C}} \mathrm{H}_{3}$
(4) $\stackrel{+}{\mathrm{C}} \mathrm{H}{3}>\mathrm{CH}{3}-\stackrel{+}{\mathrm{C}} \mathrm{H}{2}>\mathrm{CH}{3}-\stackrel{+}{\mathrm{C}} \mathrm{H} -\mathrm{CH_3}>\left(\mathrm{CH}_{3}\right) \mathrm{C}^{+}$
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Answer (3)
Solution
Formula: Stability of Carbocations
More no. of hyperconjugable Hydrogens, more stable is the carbocations.
