Question

Compare the solubility of barium fluoride in each of the following aqueous solutions:

as A)More soluble than in pure water.

B) Similar solubility as in pure water.

C) Less soluble than in pure water.

1) 0.10 M Ba(CH3COO)2

2) 0.10 M KF

3) 0.10 M NH4NO3

4) 0.10 M KCH3COO

Answer 1

1) 0.10 M Ba(CH3COO)2 ------------------>    C) Less soluble than in pure water.

2) 0.10 M KF   --------------------------------->    C) Less soluble than in pure water.

3) 0.10 M NH4NO3 ---------------------------> B) Similar solubility as in pure water.

4) 0.10 M KCH3COO -------------------------> B) Similar solubility as in pure water.

explanation :

BaF2 (s) -----------------------> Ba2+(aq) + 2F-(aq)

in Ba(CH3COO)2 , common ion is Ba2+ due to common ion present in this the solubility will decreases

in KF , the common ion is F- due to common ion is present the solubility is decreases

NH4NO3 and KCH3COOH both are salts the solubility as same as in water