Question

arrange BaSO4 ,SrSO4,CaSO4 in increasing order of solubility .explain ur answer

Answer 1

Here,anion size constant and size of cation increases and hydration energy is inversely proportional to size of cation and if hydration energy decreases ,solubility also decreases so order is. Beso4>mgso4>caso4> srso4>baso4

Answer 2

The increasing order of solubility is CaSO4>SrSO4>BaSO4.

• Solubility is higher in solvents of the same polarity.
• Polar solute soluble in polar solvent more efficiently.
• Solubility for monovalent common ion species is inversely proportional to lattice energy while lattice energy is intensely proportional to the size of an atom.
• Solubility of polyvalent species such as sulphates and carbonated is directly proportional to hydration energy where hydration energy is inversely proportional to the size of an atom.
• The size order of the given species is Ba>Sr>Ca.
• So, the solubility order will be CaSO4>SrSO4>BaSO4.

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