# pH of solution

Chemistry Level 2

Consider that:

• In a closed system, only 10% of the $$\ce{CO2}$$ dissolves into the water.
• Before was 1 mol of $$\ce{CO2}$$ and 1 liter of $$\ce{H2O}$$.
• Considering the complete ionization as a function of H + and $$\ce{H2CO3}$$, and its two steps.
• The ionization constant is $$5.0 \times 10^{-7} \text{ mol / L}$$.

What is the pH of this solution?

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