The gas among the following that can be most readily liquified is-
( Value of 'a' for NH3 = 4.17, CO2 = 3.59, SO2 = 6.71, Cl2 = 6.49)
1. NH3
2. Cl2
3. SO2
4. CO2
At moderate pressure, the van der Waal's equation becomes:
1. PVm = RT
2. P(Vm-b) = RT
3. (P+a/V2m) (Vm )= RT
4. P = RT/Vm + a/V2m
Which among the following mixtures of gases at room temperature does not obey Dalton's law of partial pressure-
1. He and O2
2. NH3 and HCl
3. H2 and He
4. N2 and He
1.6 g O2 gas and 0.1 g H2 gas are placed in a 1.12 L flask at 0 oC. The total pressure of the gas mixture will be-
1. 2 atm
2. 3 atm
3. 4 atm
4. 1 atm
The kinetic energy for 14 grams of nitrogen gas at 127°C is nearly -
(mol. mass of nitrogen = 28 and gas constant = 8.31JK–1mol–1)
1. 1.0 J
2. 4.15 J
3. 2493 J
4. 3.3 J
If 300 ml of a gas at 27°C is cooled to 7°C at constant pressure, its final volume will be:
1. | 135 ml | 2. | 540 ml |
3. | 350 ml | 4. | 280 ml |
120 g of an ideal gas of molecular weight 40 g mole–1 are confined to a volume of 20 L at 400 K. The pressure of the gas is-
( )
1. 3.90 atm
2. 4.92 atm
3. 6.02 atm
4. 2.96 atm
3.2 g of oxygen and 0.2 g of hydrogen are placed in a 1.12 litre flask at 0°C.
The total pressure of the gas mixture will be-
1. 1 atm
2. 4 atm
3. 3 atm
4. 2 atm
The density of methane at 2.0 atmosphere pressure and 27°C is-
1. 0.13 gL–1
2. 0.26 gL–1
3. 1.30 gL–1
4. 2.60 gL–1
In a flask of volume V litres, 0.2 mol of oxygen, 0.4 mol of nitrogen, 0.1 mol of ammonia and 0.3 mol of helium are enclosed at . If the total pressure exerted by these non-reacting gases is one atmosphere, the partial pressure exerted by nitrogen is-
1. 1 atm
2. 0.1 atm
3. 0.2 atm
4. 0.4 atm