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30/09/2021 11:12 am
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Which of the following salts should cause maximum cooling when 1 mole of it is dissolved in the same volume of water?
(a) NaCl; ΔHº = 5.35 kJ mol-1
(b) KNO3; ΔHº = 53.5 kJ mol-1
(c) KOH; ΔHº = -56.0 kJ mol-1
(d) HBr; ΔHº = -83.3 kJ mol-1
1 Answer
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30/09/2021 11:22 am
Correct answer: (b) KNO3; ΔHº = 53.5 kJ mol-1
Explanation:
Dissolution of KNO3 is endothermic, hence heat is absorbed and cooling is observed.