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JEE Main 20154 April
Exam
JEE Main
Year
2015
Date
4 April
Subject
Chemistry
Chapter
s Block Elements

JEE Main 2015 · 4 April · Chemistry · s Block Elements

Which one of the following alkaline earth metal sulphates has its...

Which one of the following alkaline earth metal sulphates has its hydration enthalpy greater than its lattice enthalpy?

Options

  1. ASrSO4SrS{O}_{4}
  2. BCaSO4CaS{O}_{4}
  3. CBeSO4BeS{O}_{4}
  4. DBaSO4BaS{O}_{4}

Correct answer

C. BeSO4BeS{O}_{4}

Step-by-step solution

Δ {\text{H}}_{\text{Hydration}} > Δ {\text{H}}_{\text{Lattice}}

Salt is soluble. BeSO4 is soluble due to high hydration energy of small Be2+ ion. Ksp for BeSO4 is very high.
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