Evaluate the three ka values for the acid

Reference no: EM13505479

A 0.200-g sample of a triprotic acid (molar mass = 165.0 g/mol) is dissolved in a 50.00-mL aqueous solution and titrated with 0.0500 M NaOH. After 10.50 mL of the base was added, the pH was observed to be 3.73. The pH at the first stoichiometric point was 5.19 and at the second stoichiometric point was 8.00.

a. Calculate the three Ka values for the acid.

b. Make a reasonable estimate of the pH after 59.0 mL of 0.0500 M NaOH has been added. Explain your answer.

c. Calculate the pH after 59.0 mL of 0.0500 M NaOH has been added.

Reference no: EM13505479

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