which one is more soluble

the que is from P bhadur....
which one of LiI and KI will be more soluble in water and why???
plz reply soon its urgent....
thnx

2 Answers

62
Lokesh Verma ·

I will give a slight more explanation.. i hope it helps

In case of compounds containing large anions like I-, the solubility will decrease with increase of cationic size.

In case alkaline earth metals, the decrease in solvation energy is more rapid than the decrease in lattice energy with the increase in the size of cation.

Solubility of alkali metal iodides decrease in the following order :
LiI > NaI > KI > RbI > CsI

39
Dr.House ·

its also because very small size of lithium.

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