Question: A student wishes to buffer a solution at a pH of 7.4. How many moles of the appropriate acid should be used to make 0.50L

A student wishes to buffer a solution at a pH of 7.4. How many moles of the appropriate acid should be used to make 0.50L of 0.30M buffer solution, assuming the buffer will be made using the acid (HA) and an appropriate amount of NaOH? Acid trichloroacetic acid (Cl3CCOOH) H3PO4 HF HCOOH C6H5COOH pKa at 25C 0.66 2.12 3.20 3.75 4.2

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