CHEMISTRY HIGH SCHOOL

Which compound has the lowest vapor pressure at 50°C?(1) ethanoic acid (3) propanone
(2) ethanol (4) water

Answers

Answer 1
Answer:

The compound that has the lowest vapor pressure is ethanoicacid. The correct option is 1.

What is vapor pressure?

Vapor pressure is a measure of a material'stendency to change into a gaseous or vapor state, and it rises with temperature.

The boilingpoint of a liquid is the temperature at which the vapor pressure at its surface equals the pressure exerted by its surroundings.

A liquid with weak intermolecularforces evaporates faster and has a higher vapor pressure. A liquid with stronger intermolecular forces is more difficult to evaporate and thus has a lower vapor pressure.

At 50°C, ethanoloicacid has the lowest vapor pressure, which is 0.08 atm. Propanone has a vapor pressure of 0.84 atm at 50°C. At 50°C, ethanol has a vapor pressure of 0.30 atm.

Thus, the correct option is 1.

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Answer 2
Answer:

Answer : Option A) Ethanoic Acid


Explanation : Ethanoic acid has the lowest vapor pressure i.e 0.08 atm at the temperature of 50°C compared to the other given options.


The vapour pressure of propanone at 50°C is 0.84 atm

Ethanol has vapour pressure as 0.30 atm at 50°C

water has vapour pressure of 0.12 atm at 50°C.

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Answers

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Answers

Answer:

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2  NADH  

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Answers

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Answers

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