Q.

C(graphite) +2S(s)CS2(l);ΔrH=+128.5kJmol1
The above reaction is

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a

exothermic with decrease in randomness

b

endothermic with decrease in randomness

c

endothermic with increase in randomness

d

exothermic with increase in randomness

answer is D.

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Detailed Solution

entropy order : solid < liquid < gas entropy increases

rH = +ve reaction is endothermic

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