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Citric acid (H3C6H5O7) is a triprotic acid that is naturally found in citrus fruits. Citric acid...

Citric acid (H3C6H5O7) is a triprotic acid that is naturally found in citrus fruits. Citric acid has the following pKa values: 3.14, 4.75 and 6.40.

a) Write out the three chemical (equilibrium) equations that describe the three successive ionizations of citric acid in water.

b) What is the pH of a 0.50 M solution of citric acid? Show your work

c) What is the pH of a solution consisting of 0.50 M citric acid and 0.50 M nitric acid (HNO3)? 2 decimal places.

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