A gas mixture consists of 2 moles of oxygen and 4 moles of a argon at temperature T. Neglecting all vibrational modes, the total internal energy of the system is –

(A) 4RT                         

(B) 5RT

(C) 15RT                       

(D) 11RT

Subtopic:  Kinetic Theory of Gas |
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Two flasks of equal volume connected by a narrow tube (of negligible volume) at 27ºC and contain 0.70 mole of H2 at 0.5 atm. One of the flasks is then immersed into a hot bath, kept at 127ºC, while the other remains at 27ºC. Calculate the final pressure.

(1) 5.714 atm                   

(2) 0.5714 atm

(3) 2.5214 atm                 

(4) 5.5114 atm

Subtopic:  Ideal Gas Law |
 71%
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Which is not correct curve for gay-lusacc's law?

Subtopic:  Gas Laws |
 71%
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In two vessels of 1 litre each at the same temperature 1 g of H2 and 1 g of CH4 are taken, for these:

1.  Vrms values will be same

2.  Kinetic energy per mol will be same

3.  Total kinetic energy will be same

4.  Pressure will be same

Subtopic:  Kinetic Theory of Gas |
 65%
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 The van der Waals parameters for gases W, X, Y and Z are

Gas

a (atm L2 mol-2)

b(L mol-1)

W

4.0

0.027

X

8.0

0.030

Y

6.0

0.032

Z

12.0

0.027

Which one of these gases has the highest critical temperature?

1.  W

2.  X

3.  Y

4.  Z

Subtopic:  Compressibility Factor |
 82%
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The excluded volume of a gas will be larger, if TCPC is:

1.  Small

2.  Large

3.  Equal to 1

4.  Less than unity

Subtopic:  Compressibility Factor |
 64%
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However great the pressure, a gas cannot be liquified above its:

1.  Boyle temperature

2.  Inversion temperature

3.  Critical temperature

4.  Room temperature

Subtopic:  Liquefaction of Gases & Liquid |
 86%
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The van der Waal's equation of law of corresponding states for 1 mole of gas is:

1.  Pr+3Vr2 3Vr-1=8Tr

2.  Pr-3Vr2 3Vr-1=8Tr

3.  Pr+3Vr2 3Vr+1=8πTr

4.  Pr+3Vr2 3Vr+1=8

Subtopic:  Kinetic Theory of Gas |
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The valves X and Y are opened simultaneously. The white fumes of NH4Cl will first form at :

  

(A) A                                                 

(B) B

(C) C                                                 

(D) A, B and C simultaneously

Subtopic:  Graham's Law |
 67%
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X ml of H2 gas effuses through a hole in a container in 5 seconds. The time taken for the effusion of the same volume of the gas specified below under ideal condition is

(A) 10 seconds : He                          

(B) 20 seconds : O2

(C) 25 seconds : CO                          

(D) 55 seconds : CO2

Subtopic:  Graham's Law |
 72%
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