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A propionic acid (CH3CH2COOH) buffer is prepared by adding 0.15 moles of propionic acid and 0.10...

A propionic acid (CH3CH2COOH) buffer is prepared by adding 0.15 moles of propionic acid and 0.10 moles of sodium propionate (NaCH3CH2COO) to water to make 1.20 L of solution. The Ka of propionic acid is 1.3 x 10-5.   Then 2.5 mL of 1.00 M KOH is added. What is the new pH?

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