Answer to Question #71688 in General Chemistry for nikki

General Chemistry

Question #71688

Predict which of the following substances would have the lowest vapor pressure at 25°C.

Br2

I2

Cl2

Expert's answer

The vapor pressure of the simple substances depends on molecular weight.
(If there is no intermolecular bonds)!
The more molecular weight - the lower vapor pressure.
So, the lower pressure has I2.
By the way, at normal conditions:
Cl2 - gas
Br2 - liquid
I2 - solid
Because of described above.
So the answer is I2

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25.03.20, 19:12

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24.03.20, 15:08

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