Question:

Which of the following is most soluble in water?

Updated On: Jun 14, 2022
  • CsCIO4 CsCIO_{4}
  • NaCIO4 NaCIO_{4}
  • KCIO4 KCIO_{4}
  • LiCIO4 LiCIO_{4}
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The Correct Option is D

Solution and Explanation

Higher is the hydration energy, more will be the solubility in water. If the cations have different charge then the one with higher charge will have higher hydration energy. Among CsClO4,NClO4CsClO_{4}, NClO_{4} and LiClO4LiClO_{4} all of the cations have +1+1 charge, so for comparing hydration energy size factor will be considered Smaller is the size more will be the hydration energy. Thus, among all cations Li+Li^{+} is smallest in size. Hence , LiClO4LiClO_{4} is most soluble in water
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