Chemistry

Problem

Carbonic acid (H₂CO₃) has pKₐ₁ = 6.37 for its first ionization step. A 40.0 mL sample of 0.100 M H₂CO₃ is titrated with 0.100 M NaOH. Calculate the pH after 30.0 mL of NaOH has been added. Neglect the second ionization of the acid.

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