BUFFERS
How to calculate the pH of buffer solutions. Henderson-Hasselbalch equation . Where [A-] represents the MOLAR CONCENTRATION of the salt and [HA] represents the MOLAR CONCENTRATION of the weak acid. Example 1. a) A 1.0 mol dm-3 buffer is prepared from 0.25 mol of ethanoic acid and 0.25 mol of sodium ethanoate. pKa ethanoic acid = 4.7 ................
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