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29-04-2024
Chemistry

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When a 28.8 mL sample of a 0.489 M aqueous hydrofluoric acid solution is titrated with a 0.464 M aqueous sodium hydroxide solution, what is the pH after 45.5 mL of sodium hydroxide have been added?
a) 9.62
b) 10.20
c) 9.14
d) 10.52

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