Find the pH of a solution prepared by dissolving 1.80 g of potassium hydrogen phthalate (204.221 g/mol) and 1.20 g of disodium phthalate (210.094 g/mol) in 50.0 mL of water.           Phthalic acid (H2P): pKa1 = 2.950 and pKa2 = 5.408)

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Chapter16: Acids And Bases
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Find the pH of a solution prepared by dissolving 1.80 g of potassium hydrogen phthalate (204.221 g/mol) and 1.20 g of disodium phthalate (210.094 g/mol) in 50.0 mL of water. 

         Phthalic acid (H2P): pKa1 = 2.950 and pKa2 = 5.408)

a.

5.58

b.

5.77

c.

5.408

d.

6.6

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