What is the effect of temperature on the distribution of molecul

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 Multiple Choice QuestionsLong Answer Type

131.

Write a short note on distribution of velocities of gas molecules.

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132.

What is the effect of temperature on the distribution of molecular velocities?


On increasing the temperature, the motion of the gas molecules becomes rapid and hence the value of most probable velocity also increases. As a result, the entire distribution curve becomes flatter and peak shifts to regions of higher velocities as shown in the figure.

α1 = Most probable velocity at temp. T1

α2 = Most probable velocity at temp. T2

α2 > α1

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 Multiple Choice QuestionsShort Answer Type

133.

Even though carbon dioxide is heavier than air, it does not form the lower layer, Explain. 

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 Multiple Choice QuestionsLong Answer Type

134.

What are ideal and real gases? Give the points of difference between them.

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135.

What is compressibility factor? What is its value for ideal gas and real gas?

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 Multiple Choice QuestionsShort Answer Type

136.

What are the faulty assumptions in the kinetic theory of gases which are responsible for deviations from ideal behaviour of gases?

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137.

Why do real gases show deviation from ideal behaviour?

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138.

What modifications were applied by Vander Waal to overcome the deviations of the gases from ideal gas behaviour?

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 Multiple Choice QuestionsLong Answer Type

139.

Derive an expression for the Vander Waal's equation of state.

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140.

What is the significance of the Vander Waal's constants? Write its units for Vander Waal's constants.

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