14.) Calculate the pH of a solution that isprepared by mixing 2.16 grams of propanoic acid (74.08 g/mol) and0.56 grams of NaOH (40.00 g/mol) in enough water to make 100.0 mL.The pKa of propanoic acid is 4.87.

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If a propanoic acid/propanoate buffer is 0.035 M in propanoic acidand has a pH of 4.59, what is the molar concentration of thepropanoate ion? The pKa of propanoic acid is 4.89.

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Calculate the buffer ratio (base/acid) required for a buffer of pH = 5.18 that is prepared by mixing propanoic acid and sodium propanoate. A table of pKa values can be found here. Report your answer to 2 significant figures in scientific notation.

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