Assuming ideal gas behaviour, the ratio of density of ammonia to that of hydrogen chloride at same temperature and pressure is : (Atomic wt. of Cl = 35.5 u)
02Easy28×since 2002Q1113
0.5 moles of gas A and x moles of gas B exert a pressure of 200 Pa in a container of volume 10 m³ at 1000 K. Given R is the gas constant in JK^−1mol^−1, x is :
03Medium28×since 2002Q1114
An open vessel at 27^oC is heated until two fifth of the air (assumed as an ideal gas) it has escaped from the vessel assuming that the volume of the vessel remains constant, the temperature at which the vessel has been
heated is -
04Medium28×since 2002Q1115
An evacuated glass vessel weighs 40.0 g when empty, 135.0 g when filled with a liquid of density 0.95 g mL^−1 and 40.5 g when filled with an ideal gas at 0.82 atm at 250 K. The molar mass of the gas in g mol^−1 is :
(Given : R = 0.082 L atm K^−1 mol^−1)
05Easy28×since 2002Q1116
Kinetic theory of gases proves
06Easy28×since 2002Q1117
According to the kinetic theory of gases, in an ideal gas, between two successive collisions of a gas molecule travels
07Easy28×since 2002Q1118
As the temperature is raised from 20°C to 40°C, the average kinetic energy of neon atoms
changes by a factor of which of the following?
08Medium28×since 2002Q1119
Which one of the following statements is NOT true about the effect of an increase in
temperature on the distribution of molecular speeds in a gas?
09Medium28×since 2002Q1120
For gaseous state, if most probable speed is denoted by C*, average speed by C__ and mean square speed by
C, then for a large number of molecules the ratios of these speeds are:
10Medium28×since 2002Q1121
Initially, the root mean square (rms) velocity of N₂ molecules at certain temperature is u. If this temperature is doubled and all the nitrogen molecules dissociate into nitrogen atoms, then the new rms velocity will be :