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  4. NH4Cl(s) xrightarrowNH3(g)+HCl(g) When the above reaction occurs, the entropy

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Q. $ N{{H}_{4}}Cl(s)\xrightarrow{{}}N{{H}_{3}}(g)+HCl(g) $ When the above reaction occurs, the entropy

VMMC MedicalVMMC Medical 2007

Solution:

Key Idea: The entropy is measurement of randomness. Gases have highest entropy because they have maximum randomness as compared to liquid and gaseous state. $ N{{H}_{4}}Cl(s)\xrightarrow{{}}N{{H}_{3}}(g)+HCl(g) $ $ \because $ The reactants are in solid state and products formed are in gaseous state. $ \therefore $ Entropy of system increases.