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Chemistry 8 Online
OpenStudy (anonymous):

Using the Henderson-Hasselbalch Equation, calculate the volume of 0.1 M Na2HPO4 and 0.1 M NaH2PO4 required to make 100 mL of a 0.1 M buffer with pH 6.91. equation: 10^pH-pKa = [base]/[acid]

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