(i) Cis-2 - butene \( \rightarrow \) trans \( -2 \) - butene, \( \D...
(i) Cis-2 - butene \( \rightarrow \) trans \( -2 \) - butene, \( \Delta \mathrm{H}_{1} \)
(ii) Cis -2- butene \( \rightarrow 1 \) - butene, \( \Delta \mathrm{H}_{2} \)
\( \mathrm{P} \)
(iii) Trans -2 - butene is more stable than cis \( -2 \) - butene.
W
(iv) Enthalpy of combustion of 1-butene, \( \Delta \mathrm{H}=-649.8 \mathrm{kCal} / \mathrm{mol} \)
(v) \( 9 \Delta \mathrm{H}_{1}+5 \Delta \mathrm{H}_{2}=0 \)
(vi) Enthalpy of combustion of trans 2 - butene, \( \Delta \mathrm{H}=-647.0 \mathrm{kCal} / \mathrm{mol} \).
The value of \( \Delta \mathrm{H}_{1} \& \Delta \mathrm{H}_{2} \) respectively in \( \mathrm{KCal} / \mathrm{mol} \) are
(A) \( -1.0,1.8 \)
(B) \( 1.8,-1.0 \)
(C) \( -5,9 \)
(D) \( -2,3.6 \)
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