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Problem

The simplest amino acid is glycine, $\mathrm{H}_{…
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Rikhil M.
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Problem 81 Hard Difficulty

In dilute aqueous solution $\mathrm{HF}$ acts as a weak acid. However, pure liquid HF (boiling point $=19.5^{\circ} \mathrm{C} )$ is a strong acid. In liquid HF, HNO_ acts like and accepts protons. The acidity of liquid HF can be increased by adding one of several inorganic fluorides that are Lewis acids and accept $\mathrm{F}^{-}$ ion (for example, $\mathrm{BF}_{3}$ or $\mathrm{SbF}_{5} ) .$ Write balanced chemical equations for the reaction of pure $\mathrm{HNO}_{3}$ with pure $\mathrm{HF}$ and of pure $\mathrm{HF}$ with $\mathrm{BF}_{3}$

Answer

$\underset{\text { base }}{\mathrm{HNO}_{3}}(l)+\underset{\text { acid }}{\mathrm{HF}}(l) \rightleftharpoons \mathrm{H}_{2} \mathrm{NO}_{3}^{+}(a q)+\mathrm{F}^{-}(a q)$
$\underset{\text { base }}{\mathrm{HF}}(l)+\underset{\text { acid }}{\mathrm{BF}_{3}(l)} \rightleftharpoons \mathrm{H}^{+}(a q)+\mathrm{BF}_{4}^{-}(a q)$

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Chemistry 102
Chemistry

Chapter 15

Equilibria of Other Reaction Classes

Related Topics

Chemical Equilibrium

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Video Transcript

everyone, this is Ricky. And today, working on a problem 81. So we're gonna be writing the, uh, chemical equilibrium four, a chain of three and hydrofluoric acid and then hydrofluoric acid and be a free. In one case, hydrofluoric acid will be acting as an acid, and the other will be acting as a base. All right, so H and o three liquid plus h er, this is, uh, turns into a TSH to and plus F minus. In this case, um, hydrofluoric acid acts as an antacid. It's a proton donor. Jennifer is a base. Other would mean you have a Louis acid. Beautifully was her fork. We get something different we get, um, that bf three axes acid on electron except er and heard Florrick acid is actually, I think, as a base. So I hope this video is subbed for more

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Chemistry

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