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Class XI Chemistry States of Matter 6

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Question 1

NH₃ gas is liquefied more easily than N₂. Hence -

Question 2

Equimolar solutions in the same solvent have

Question 3

Van der Waal’s constant ‘b’ and the corresponding values of critical temperature for three gases P, Q, R are given below –

Which of the gas/gases is/are liquefiable at a temperature –110 °C by application of increasing pressure ?

Question 4

A jar contains a gas and a few drops of water at TK temperature. The pressure in the jar is 830 mm of Hg. The temperature of the jar is reduced by 1%. The vapour pressures of water at two temperatures are 30 and 25 mm of Hg. Calculate the new pressure in jar

Question 5

The compressibility factor for a real gas at high pressure is :

Question 6

If Z is a compressibility factor, van der Waals equation at low pressure can be written as:

Question 7

‘a’ and ‘b’ are van der Waals’ constants for gases. Chlorine is more easily liquefied than ethane because

Question 8

For gaseous state, if most probable speed is denoated by C*, average speed by and mean square speed by C, then for a large number of molecules the ratios of these speeds are

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Jul 20JEE & BITSAT