When HF(aq) is titrated with NaOH(aq), the pH at the equivalence point is less than 7.0....

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When HF(aq) is titrated with NaOH(aq), the pH at the equivalence point is less than 7.0. Suggested time: 2 min True False

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Answer 1

Answer #1

HF is a weak acid, NaOH is a strong base. At the equivalence point, HF and NaOH are fully reacted to give NaF, which is the salt of weak acid and strong base.

HF (aq) + NaOH (aq) = NaF (aq) + H₂O (l)

A salt of weak acid and strong base has basic pH ( that is, pH more than 7). For, the answer is false.

( similarly, salt of strong acid weak base has pH less than 7, and salt of strong acid strong base has pH = 7)

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Answer 2

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When HF(aq) is titrated with NaOH(aq), the pH at the equivalence point is less than 7.0....

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When HF(aq) is titrated with NaOH(aq), the pH at the equivalence point is less than 7.0....

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