Explain hydrogen fluoride behaves as a weak acid in solution

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Reference no: EM13241597

Hydrogen fluoride behaves as a weak acid in solution. Two equilibria influence which fluorine containing species are present in solution.

HF (g) + H2O (l) --> H3O+ (aq) + F- (aq) (Ka= 1.1*10^-3)
F-(aq) +HF (g) --> HF2- (aq) (Ka= 2.6*10^-1)

a. Is fluoride in pH 7.00 drinking water more likely to be present as F- or HF2-
b. What is the equilibrium constant for this equilibrium?

2HF (g) + H2O (l) --> H3O+ (aq) + HF2- (aq)

c. what are the pH and equilibrium concentration of HF2- in a .170M solution of HF?

Reference no: EM13241597

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