α-D glucose undergoes mutarotation to β-D glucose in an aqueous solution at 298 K. If 64% of conversion observed after some time to attain equilibrium, then the reaction quotient and spontanity of reaction is

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1.78, non spontaneous

0.56, non-spontaneous

1.78, spontaneous

0.56, spontaneous

answer is C.

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Detailed Solution

α-Dglucose⇌β-Dglucose reaction quotient (Q)=[β-Dglucose][α-Dglucose]=6436 =1.777ΔG0=-2.303RTlog(Q)=-1.014 kJ.mol-1 As ΔG° value is negative, reaction is spontaneous

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