Problem- the pka of acetic acid ch3cooh is 474 a buffer, Ask an Expert

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Problem- The pKa of acetic acid, CH3COOH, is 4.74. A buffer solution was made using an unspecified amount of acetic acid and 0.30 moles of NaOOCCH3 in enough water to make 1.50 L of solution. The pH of the solution is 4.55.How many moles of CH3COOH were used?

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