Benzene can be reduced to cyclohexane when it is treated with hydrogen in the presence of a nickel catalyst under conditions of high temperature and pressure. Predict the signs of ΔH⊖ and ΔS⊝ for this process.

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ΔH⊖>0,ΔS⊖<0

ΔH⊖>0,ΔS⊖>0

ΔH⊖>0,ΔS⊖=0

ΔH⊖<0,ΔS⊖<0

answer is D.

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Detailed Solution

due to o-bond formation ∴ ∆H= -ve4 mole of reactant and only one mole of product is formed∴ΔS=1−4=−3. ∴ ΔS=−ve

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