Question

The solubility product of $ BaS{{O}_{4}} $ is $ 1\times {{10}^{-12}} $ . What will be the concentration of barium ions in its saturation solution?

• A. $ 1\times {{10}^{6}} $
• B. $ 1\times {{10}^{-6}} $
• C. $ 1\times {{10}^{12}} $
• D. $ 1\times {{10}^{-12}} $

Answer 1

Answer: (B)

$ \underset{(a)}{\mathop{BaS{{O}_{4}}}}\,\underset{(s)}{\mathop{B{{a}^{++}}}}\,+\underset{(s)}{\mathop{S{{O}_{4}}^{-\,\,-}}}\, $ $ {{K}_{sp}}={{s}^{2}} $ $ s=\sqrt{{{K}_{sp}}} $ $ =\sqrt{1\times {{10}^{-12}}}=1\times {{10}^{-6}} $