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What mass of solid sodium formate of mw 6801 must be added

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What mass of solid sodium formate (of MW 68.01) must be added to 140 mL of 0.57 mol/L formic acid (HCOOH) to make a buffer solu- tion having a pH of 4.16? Ka = 0.00018 for HCOOH.

Reference no: EM13345119

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