HCN ⇄ H⁺ + CN⁻
Initial 0.14 0 0
Change -x +x +x
Equilibrium (0.14 -x) +x +x
Ka =![\frac{[CN^{-}][ H^{+} ]}{[HCN]}](https://tex.z-dn.net/?f=%20%5Cfrac%7B%5BCN%5E%7B-%7D%5D%5B%20H%5E%7B%2B%7D%20%5D%7D%7B%5BHCN%5D%7D%20)
6.2 x 10⁻¹⁰ =
value of x <<<< 0.14
so x² = (6.2 x 10⁻¹⁰) (0.14)
x = 9.32 x 10⁻⁶ = [H⁺] = [CN⁻]
% ionization = Hydrogen ion concentration / total concentration x 100
=![\frac{ [H^{+}]}{[HCN]} x 100](https://tex.z-dn.net/?f=%20%5Cfrac%7B%20%5BH%5E%7B%2B%7D%5D%7D%7B%5BHCN%5D%7D%20x%20100%20)
=
= 6.65 x 10⁻³ %
Initial 0.14 0 0
Change -x +x +x
Equilibrium (0.14 -x) +x +x
Ka =
6.2 x 10⁻¹⁰ =
value of x <<<< 0.14
so x² = (6.2 x 10⁻¹⁰) (0.14)
x = 9.32 x 10⁻⁶ = [H⁺] = [CN⁻]
% ionization = Hydrogen ion concentration / total concentration x 100
=
=
= 6.65 x 10⁻³ %