Arrange these compounds by their expected vapor pressure: H2O NCl3 Br2

Given compounds are arranged in decreasing order of their vapor pressure as follows.

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Explanation:

Vapor pressure is defined as the pressure exerted by the vapors which are present on the surface of a liquid. Less is the intermoecular forces present within the molecules of a substance more will be its vapor pressure.

For example, is a gas and there exists Vander waal forces between its molecules. Hence, it has more vapor pressure than and .

In , there exists hydrogen bonding which is stronger than bonding present in . So, has low vapor pressure.

In , there exists dipole-dipole interaction which is stronger than Vander waal forces but weaker than hydrogen bonding.

Therefore, given compounds are arranged in decreasing order of their vapor pressure as follows.

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answer: c.

explanation:

it would be b. 6co2 + 6h2o --> c6h12o6 + 6o2