How would you expect phosphorus pentachloride to react with ethanol? How does this reaction resemble the reaction of phosphorus pentachloride with ethanoic acid?

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How would you expect phosphorus pentachloride to react with ethanol? How does this reaction resemble the reaction of phosphorus pentachloride with ethanoic acid?

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Answer 1 · 2016-11-29T18:25:30

With alcohol:
$PCl_5+ROH rarr O=PCl_3 + RCl + HCl$

Explanation:

With acid:

$PCl_5+RC(=O)OH rarr O=PCl_3 + RC(=O)Cl + HCl$

$"Phosphorus pentachloride"$ is a halogenating agent. It is rarely used these days, as you have to remove the $"pockle3"$ after the reaction. $PCl_5$ is very water sensitive, and a bit hard to handle. A better alternative might be $"thionyl chloride"$ , which you can pour out of a bottle and distill off:

$RCO_2H + SOCl_2 + Delta rarr RC(=O)Cl + SO_2uarr + HCluarr$

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How would you expect phosphorus pentachloride to react with ethanol? How does this reaction resemble the reaction of phosphorus pentachloride with ethanoic acid?

1 Answer

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