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1) An aqueous solution contains 0.280 M NaHS and 0.128 M H2S. The pH of this...

1) An aqueous solution contains 0.280 M NaHS and 0.128 M H2S.

The pH of this solution is _____

2) A buffer solution is 0.321 M in H2SO3 and 0.328 M in NaHSO3. If Ka for H2SO3 is 1.7×10-2, what is the pH of this buffer solution?

pH = ________

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