States of Matter Gases and Liquids

Force acting perpendicular to the tangential line of surface per unit length

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Points To Remember: Surface tension is a Scalar quantity It is temperature sensitive Unit of surface tension is N/m Dimension […]

Temperature at which solid converts into liquid at atmospheric pressure.

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Points to Remember: If the compound melts over a very narrow range, it can usually be assumed that the compound is relatively […]

Temperature at which vapour pressure of liquid is equal to atmospheric pressure.

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Points to Remember: Point at which liquid changes to steam. Vander walls forces between molecules break because of which liquid […]

Volume occupied by one mole of gas at critical temperature and pressure

Minimum pressure required to liquify the gas at critical temperature.

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Points to Remember:

The combination of critical temperature and critical pressure is called the critical point of a substance.

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Temperature above which gas cannot be liquefied by pressure alone.

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Points to Remember:

Gases can be converted to liquids by compressing the gas at a suitable temperature. The critical temperature of a […]

Gas which obeys gas laws and gas equation pV=nRT at all temperatures and pressures.

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Base Concepts:

Ideal Gas Law

Points to Remember For a gas to be called as ideal gas it must […]

Rate of diffusion of gases is inversely proportional to the square root of their densities under similar conditions.

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Points to Remember

Graham’s Law of diffusion can also be stated as the […]

Pressure of mixture of non-reacting gases is equal to sum of their partial pressures under similar conditions.

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Points to Remember

The partial pressure of each gas is equal to the mole fraction […]