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Formic acid (K_a = 1.7 times 10^-4) and sodium formate were used to prepare a buffer solution of pH 4.31. The concentration of the dissociated formic acid in this buffer solution was 0.80 mol/L. Under these conditions, the molar concentration of formic acid was this: (1) 1.4 mol/L: (2) 2.3 mol/L: (3) 2.8 mol/L: (4) 0.23 mol/L
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Formic acid (K_a = 1.7 times 10^-4) and sodium formate were used to prepare a buffer solution of pH 4.31. The concentration of the dissociated formic acid in this buffer solution was 0.80 mol/L. Under these conditions, the molar concentration of formic acid was this: (1) 1.4 mol/L: (2) 2.3 mol/L: (3) 2.8 mol/L: (4) 0.23 mol/L
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Elin HesselLv2
2 Sep 2019
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