Malonic acid, H2C3H2O4, is a diprotic acid with pKa,1 = 2.82 and pKa,2 = 5.71 at 25 °C. For 0.173 mol L−1 H2C3H2O4(aq) a

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Malonic acid,H2C3H2O4, is a diproticacid with pKa,1 = 2.82 andpKa,2 = 5.71 at 25 °C.
For 0.173 molL−1 H2C3H2O4(aq)at 25 °C, calculate:
(a) the fraction, α1, ofH2C3H2O4 thatexists in the singly-ionized form,HC3H2O4−
α1 =
(Enter a number between 0 and 1,accurate to 2 significant figures.)
(b) the equilibrium concentration of the doubly-ionizedform, C3H2O42−
[ C3H2O42− ]eq = molL−1
(Enter a number accurateto 2 significant figures.)
(c) the pH
pH =
(Enter a number accurateto 2 decimal places.)