# Ionic equilibrium

Chemistry Level 2

Determine the $$\text{pH}$$ of a $$0.05 \text{ M}$$ aqueous solution of sodium-bicarbonate.

Take $$K(a_1) = 4 \times 10^{-7}$$ and $$K(a_2) = 5 \times 10^{-11}$$ for carbonic acid at 25 celcius.

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