Q.

Statement -I : Common salt is deliquescentStatement-II: Solubility of NaCl increases with increase in temperature

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Both statements I and II are correct

Statement-I is correct and statement-II is incorrect

Statement-I is incorrect and statement-II is correct

Both statements I and II are incorrect

answer is 2.

(Detailed Solution Below)

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Detailed Solution

Pure NaCl is not deliquescent. CaCl2 and MgCl2 present as impurities in NaCl are responsible for deliquescence;∆Hsolution =∆Hhydration(exothermic)+∆Hlatticeenthalpy(endothermic) For Nacl dissolved in H2O ∆Hhydrationethalpy(-784 kJ)≈∆Hlatticeenthalpy(+788 kJ)∴∆Hsolution=+4 kJ =+1 k cal∆Hsolutionis almost negligible.(almost zero)∴solubility of NaCl in water almost remains constant with change in temperature

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