The incorrect order of solubility in water is

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(D) $1$. For $Group \ 2$ hydroxides,solubility increases down the group due to the decrease in lattice energy being more significant than the decrease

Vedclass · Accepted Answer

$BeS_2O_3 < MgS_2O_3 < CaS_2O_3$

Vedclass · Answer

(D) $1$. For $Group \ 2$ hydroxides,solubility increases down the group due to the decrease in lattice energy being more significant than the decrease in hydration energy. Thus,$Ca(OH)_2 $2$. For alkali metal carbonates,solubility increases down the group as the lattice energy decreases significantly. Thus,$Li_2CO_3 $3$. For nitrates of alkali metals,solubility decreases down the group as the hydration energy decreases more rapidly than the lattice energy. Therefore,the correct order is $CsNO_3 $4$. For alkaline earth metal thiosulfates,solubility generally decreases down the group due to the dominance of lattice energy over hydration energy. Therefore,the order $BeS_2O_3  MgS_2O_3 > CaS_2O_3$.

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