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A 42.0 mL sample of a 0.309 M aqueous hydrofluoric acid solution is titrated with a...

Question:

A 42.0 mL sample of a 0.309 M aqueous hydrofluoric acid solution is titrated with a 0.340 M aqueous barium hydroxide solution

A 42.0 mL sample of a 0.309 M aqueous hydrofluoric acid solution is titrated with a 0.340 M aqueous barium hydroxide solution. What is the pH after 11.8 mL of base have been added? pH =

Answers

Number of milimales of HE acid in 42mL of solution = 42m2 x o: 309m = 0.0424x0.309 molt = 0.01297 mole = 12.97 mmol Number of8Ł:0 btŁ.0. = (991:0) for- = Hd [A] Bop - = Hd

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