Q.

There is no ring strain in cyclohexane, but cyclobutane has an angle strain of 9° 44' .If ΔHc of cyclohexane per (CH2) group is 660 kJ mol-1 and ΔHc of cyclobutene is 2744 kJ mol-1, what is the?it g strain in kJ mol-1 of cyclobutene?

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a

-104

b

2084

c

- 2084

d

104

answer is B.

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Detailed Solution

Ring strain : ΔHc of cyclobutane 4×ΔHc of per CH2group of cyclohexane) : 2744 - (4 x 660)
= 104 kJ mol-1

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There is no ring strain in cyclohexane, but cyclobutane has an angle strain of 9° 44' .If ΔHc∘ of cyclohexane per (CH2) group is 660 kJ mol-1 and ΔHc∘ of cyclobutene is 2744 kJ mol-1, what is the?it g strain in kJ mol-1 of cyclobutene?