Gaseous State

At the sea level, the dry air mass percentage composition is given as nitrogen gas: 70.0 , oxygen gas: 27.0 and argon gas: 3.0 . If total pressure is 1.15 atm , then calculate the ratio of following respectively:
(i) partial pressure of nit...

Three bulbs are filled with \(\mathrm{CH}_{4}, \mathrm{CO}_{2}\) and \(\mathrm{Ne}\) as shown in the picture. The bulbs are connected through pipes of zero volume. When the stopcocks are opened and the temperature is kept constant througho...

Arrange the following gases in increasing order of van der Waals constant 'a'
A. Ar
B. \(\mathrm{CH}_{4}\)
C. \(\mathrm{H}_{2} \mathrm{O}\)
D. \(\mathrm{C}_{6} \mathrm{H}_{6}\)
Choose the correct option from the following.

The total pressure of a mixture of non-reacting gases \(\mathrm{X}(0.6 \mathrm{~g})\) and \(\mathrm{Y}(0.45 \mathrm{~g})\) in a vessel is \(740 \mathrm{~mm}\) of \(\mathrm{Hg}\). The partial pressure of the gas \(\mathrm{X}\) is _______ $$\...

A \(300 \mathrm{~mL}\) bottle of soft drink has \(0.2 ~\mathrm{M}~ \mathrm{CO}_{2}\) dissolved in it. Assuming \(\mathrm{CO}_{2}\) behaves as an ideal gas, the volume of the dissolved \(\mathrm{CO}_{2}\) at \(\mathrm{STP}\) is ____________ ...

For 1 mol of gas, the plot of pV vs. p is shown below. p is the pressure and V is the volume of the gas

What is the value of compressibility factor at point A ?

The number of statement/s, which are correct with respect to the compression of carbon dioxide from point (a) in the Andrews isotherm from the following is ___________

A. Carbon dioxide remains as a gas upto point (b)
B. Liquid carbon diox...

A certain quantity of real gas occupies a volume of \(0.15~ \mathrm{dm}^{3}\) at \(100 \mathrm{~atm}\) and \(500 \mathrm{~K}\) when its compressibility factor is 1.07 . Its volume at 300 atm and \(300 \mathrm{~K}\) (When its compressibility...

At \(600 \mathrm{~K}\), the root mean square (rms) speed of gas \(\mathrm{X}\) (molar mass \(=40\) ) is equal to the most probable speed of gas \(\mathrm{Y}\) at \(90 \mathrm{~K}\). The molar mass of the gas \(\mathrm{Y}\) is ___________ $$...

At constant temperature, a gas is at a pressure of 940.3 mm Hg. The pressure at which its volume decreases by 40% is __________ mm Hg. (Nearest integer)

Geraniol, a volatile organic compound, is a component of rose oil. The density of the vapour is 0.46 gL\(-\)1 at 257\(^\circ\)C and 100 mm Hg. The molar mass of geraniol is ____________ g mol\(-\)1. (Nearest Integer)
[Given : R = 0.082 L at...

'x' g of molecular oxygen \(\left(\mathrm{O}_{2}\right)\) is mixed with \(200 \mathrm{~g}\) of neon (Ne). The total pressure of the non-reactive mixture of \(\mathrm{O}_{2}\) and Ne in the cylinder is 25 bar. The partial pressure of Ne is 2...

100 g of an ideal gas is kept in a cylinder of 416 L volume at 27\(^\circ\)C under 1.5 bar pressure. The molar mass of the gas is __________ g mol\(-\)1. (Nearest integer)
(Given : R = 0.083 L bar K\(-\)1 mol\(-\)1)

Which amongst the given plots is the correct plot for pressure (p) vs density (d) for an ideal gas?

For a real gas at \(25^{\circ} \mathrm{C}\) temperature and high pressure (99 bar) the value of compressibility factor is 2, so the value of Vander Waal's constant 'b' should be __________ \(\times 10^{-2} \mathrm{~L} \mathrm{~mol}^{-1}\) (...

2.0 g of H2 gas is adsorbed on 2.5 g of platinum powder at 300 K and 1 bar pressure. The volume of the gas adsorbed per gram of the adsorbent is __________ mL.
(Given : R = 0.083 L bar K\(-\)1 mol\(-\)1)

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...

A mixture of hydrogen and oxygen contains \(40 \%\) hydrogen by mass when the pressure is \(2.2\) bar. The partial pressure of hydrogen is bar. (Nearest Integer)

A \(10 \mathrm{~g}\) mixture of hydrogen and helium is contained in a vessel of capacity \(0.0125 \mathrm{~m}^{3}\) at 6 bar and \(27^{\circ} \mathrm{C}\). The mass of helium in the mixture is ____________ g. (nearest integer)
Given: $$\mat...

A rigid nitrogen tank stored inside a laboratory has a pressure of 30 atm at 06:00 am when the temperature is 27\(^\circ\)C. At 03:00 pm, when the temperature is 45\(^\circ\), the pressure in the tank will be _________ atm. [nearest integer...

The pressure of a moist gas at \(27^{\circ} \mathrm{C}\) is \(4 \mathrm{~atm}\). The volume of the container is doubled at the same temperature. The new pressure of the moist gas is ________________ \(\times 10^{-1} \mathrm{~atm}\). (Neares...

A sealed flask with a capacity of 2 dm3 contains 11 g of propane gas. The flask is so weak that it will burst if the pressure becomes 2 MPa. The minimum temperature at which the flask will burst is ___________ \(^\circ\)C. [Nearest integer]...

At 300 K, a sample of 3.0 g of gas A occupies the same volume as 0.2 g of hydrogen at 200 K at the same pressure. The molar mass of gas A is ____________ g mol\(-\)1. (nearest integer) Assume that the behaviour of gases as ideal.
(Given : T...

Which one of the following is the correct PV vs P plot at constant temperature for an ideal gas? (P and V stand for pressure and volume of the gas respectively)

The unit of the van der Waals gas equation parameter 'a' in \(\left( {P + {{a{n^2}} \over {{V^2}}}} \right)(V - nb) = nRT\) is :

3.12 g of oxygen is adsorbed on 1.2 g of platinum metal. The volume of oxygen adsorbed per gram of the adsorbent at 1 atm and 300 K in L is __________.[R = 0.0821 L atm K\(-\)1mol\(-\)1]

A certain gas obeys P(Vm \(-\) b) = RT. The value of \({\left( {{{\partial Z} \over {\partial P}}} \right)_T}\) is \({{xb} \over {RT}}\). The value of x is _________. (Integer answer) (Z : compressibility factor)

The interaction energy of London forces between two particles is proportional to rx, where r is the distance between the particles. The value of x is :

A home owner uses 4.00 \(\times\) 103 m3 of methane (CH4) gas, (assume CH4 is an ideal gas) in a year to heat his home. Under the pressure of 1.0 atm and 300 K, mass of gas used is x \(\times\) 105 g. The value of x is __________. (Nearest ...

An LPG cylinder contains gas at a pressure of 300 kPa at 27\(^\circ\). The cylinder can withstand the pressure of 1.2 \(\times\) 106 Pa. The room in which the cylinder is kept catches fire. The minimum temperature at which the bursting of c...

A car tyre is filled with nitrogen gas at 35 psi at 27\(^\circ\)C. It will burst if pressure exceeds 40 psi. The temperature in \(^\circ\)C at which the car tyre will burst is _________. (Rounded off to the nearest integer)

The volume occupied by 4.75 g of acetylene gas at 50\(^\circ\)C and 740 mmHg pressure is __________ L. (Rounded off to the nearest integer)[Given R = 0.0826 L atm K\(-\)1 mol\(-\)1]

An empty LPG cylinder weighs 14.8 kg. When full, it weighs 29.0 kg and shows a pressure of 3.47 atm. In the course of use at ambient temperature, the mass of the cylinder is reduced to 23.0 kg. The final pressure inside of the cylinder is _...

The pressure exerted by a non-reactive gaseous mixture of 6.4g of methane and 8.8 g of carbon dioxide in a 10L vessel at 27\(^\circ\)C is __________ kPa. (Round off to the Nearest Integer).[Assume gases are ideal, R = 8.314 J mol\(-\)1 K$$-...

The number of chlorine atoms in 20 mL of chlorine gas at STP is _________ 1021. (Round off to the Nearest Integer).[Assume chlorine is an ideal gas at STPR = 0.083 L bar mol\(-\)1 K\(-\)1, NA = 6.023 \(\times\) 1023]

NaClO3 is used, even in spacecrafts, to produce
O2. The daily consumption of pure O2 by a
person is 492L at 1 atm, 300K. How much
amount of NaClO3, in grams, is required to
produce O2 for the daily consumption of a
person at 1 atm, 300 K?
N...

Identify the correct labels of A,B and C in the following graph from the options given below :

Root mean square speed (Vrms); most probable speed (Vmp); Average speed (Vav)

A spherical balloon of radius 3 cm containing
helium gas has a pressure of 48 \(\times\) 10–3 bar. At
the same temperature, the pressure, of a
spherical balloon of radius 12 cm containing
the same amount of gas will be ________ $$ \times ...

A mixture of one mole each of H2
, He and O2
each are enclosed in a cylinder of volume V at
temperature T. If the partial pressure of H2
is 2 atm, the total pressure of the gases in the
cylinder is :

Which one of the following graphs is not
correct for ideal gas?

d = Density, P = Pressure, T = Temperature

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 :

Consider the van der Waals constants, a and b,
for the following gases.

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At a given temperature T, gases Ne, Ar, Xe and
Kr are found to deviate from ideal gas
behaviour. Their equation of state is given as
\(p = {{RT} \over {V - b}}\) at T.
Here, b is the van der Waals constant. Which
gas will exhibit steepest i...

The volume of gas A is twice than that of gas B. The compressibility factor of gas A is thrice than that of gas B at same temperature. The pressures of the gases for equal number of moles are -

An open vessel at 27oC 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 -

Consider the following table :

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Points I, II and III in the following plot respectively correspond to (Vmp : most probable velocity)

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)

At 300 K, the density of a certain gaseous molecule at 2 bar is double to that of
dinitrogen (N2 ) at 4 bar. The molar mass of gaseous molecule is :

Among the following, the incorrect statement is :