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Questions  

The process with negative entropy change is 

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By Expert Faculty of Sri Chaitanya
a
Dissolution of iodine in water
b
Synthesis of ammonia from N2 and H2
c
Dissolution of  CaSO4(s) to CaO(s) and SO3(g)
d
Sublimation of dry ice

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detailed solution

Correct option is B

N2(g)+3H2(g)⇌2NH3(g);Δng<0
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Calculate the molar entropy change when a sample of hydrogen gas expands isothermally to twice of its initial volume

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