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How is vapor pressure related to decreasing boiling point and the ease of boiling?

Answer 1

If the boiling point decreases, then it is easier to reach the boiling point. Thus, it is easier to boil.

The vapor pressure is the pressure exerted by the vapor above the liquid form of the same substance. In order to boil, one needs the vapor pressure above the liquid to equal atmospheric pressure.

Therefore, if boiling is easier, then the amount of vapor above its liquid is higher, so it is easier to reach atmospheric pressure, and the vapor pressure is higher.

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In relation to the above link, it turns out that lower boiling point #harr# weaker intermolecular forces.

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Answer 2

Naomi Aronson

Vapor pressure is inversely related to boiling point. A substance with a higher vapor pressure at a given temperature will have a lower boiling point and will boil more easily compared to a substance with lower vapor pressure.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.