Potash alum is K Al(SO_4)_2. 12H_2O. As a strong eletrolyte, it is considered to be 100% dissociated into K^+, Al^(3+) and SO_4^(2-). The solution is acidic because of the hydrolysis of Al^(3+), but not so acidic as might be expected, because the SO_4^(2-) can sponge up some the H_3O^+ by forming HSO_4^-. Given a solution made by dissolving 11.85 gm of KAl(SO_4)_2.12H_2O in enough water to make 100cm^3 of solution. Only Al3^+ is hydrolysing and its first hydrolsis constant is 1.4 xx 10^(-5)M

Potash alum is K Al(SO_4)_2. 12H_2O. As a strong eletrolyte, it is con

1.	Potash alum is K Al(SO_4)_2. 12H_2O. As a strong eletrolyte, it is considered to be 100% dissociated into K^+, Al^(3+) and SO_4^(2-). The solution is acidic because of the hydrolysis of Al^(3+), but not so acidic as might be expected, because the SO_4^(2-) can sponge up some the H_3O^+ by forming HSO_4^-. Given a solution made by dissolving 11.85 gm of KAl(SO_4)_2.12H_2O in enough water to make 100cm^3 of solution. Only Al3^+ is hydrolysing and its first hydrolsis constant is 1.4 xx 10^(-5)M
Answer» `1.87 xx 10^(-3)M` `6.24 xx 10^(-4)M` `0.09M` None of these Answer :A