Which of the following alkaline earth metal s | vedclass

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Question

(B) The solubility of alkaline earth metal sulphates depends on the balance between hydration enthalpy and lattice enthalpy.Hydration enthalpy decreas

Vedclass · Accepted Answer

$BeSO_4$

Vedclass · Answer

(B) The solubility of alkaline earth metal sulphates depends on the balance between hydration enthalpy and lattice enthalpy.Hydration enthalpy decreases as the size of the cation increases,while lattice enthalpy remains relatively constant for these sulphates due to the large size of the sulphate anion.The ionic size order is $Be^{2+} Since $Be^{2+}$ is the smallest ion,it has the highest hydration enthalpy.$BeSO_4$ is the only sulphate among the options where the hydration enthalpy is sufficiently high to overcome the lattice enthalpy,making it highly soluble in water.

Which of the following alkaline earth metal sulphates has hydration enthalpy higher than the lattice enthalpy?

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