Question

When 1-pentyne (A) is treated with 4 N alcoholic KOH at 175°C, it is converted slowly into an equilibrium mixture of 1.3% 1-pentyne (A), 95.2% 2-pentyne (B) and 3.5% of 1, 2- pentadiene (C). The equilibrium was maintained at 175°C. Calculate DG° for the following equilibria : $B \rightleftharpoons A$ $\Delta G_1^0$ = ? $B \rightleftharpoons C$ $\Delta G_2^0$ = ?
From the calculated value of $\Delta G_1^0$ and $\Delta G_2^0$ indicate the order of stability of (A), (B) and (C). Write a reasonable reaction mechanism showing all intermediates leading to (A), (B) and (C).

Answer 1

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OPTION NO.C