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pH of buffer solution

1) A buffer is prepared by adding 0.200 mol of sodium lactate ( NaC3H5O3) to 500ml of 0.5 M lactic acid ( Ka = 1.4 x 10^-4).

A) What is the pH of the buffered solution?

B) What is the pH after 100ml of 0.100 M HCL is added to the buffer?

C) What is the pH after 12 g of NaOH is added to the original solution prepared in A?

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Solution Summary

The solution shows how to calculate the pH of a buffered solution. It also investigates the impact of adding acid and base solution on the buffer solution (see attachment).