Page 66 - SP015 Past Years PSPM Chapter 6 -14 Ver 2020

PHYSICS PSPM SEM 1 1999 - 2017

PSPM CHAPTER 13: GAS LAWS AND KINETIC THEORY
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Ideal Gas Equation

PSPM 2003/2004 SF017/2 No. 8(a)

1. What is ideal gas? [1 m]

PSPM 2012/2013 SF016/2 No. 8(c)(i)

2. Write the ideal gas equation. [1 m]

PSPM 2009/2010 SF017/2 No. 14(a)

3. The equation of ideal gas is pV = nRT = NkT. State the meaning of n, N, and k. [3 m]

PSPM JUN 1999/2000 SF015/2 No. 14(b)

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4. Oxygen gas with mass of 75.02  10 kg is filled into a cylinder at pressure
2 atmosphere and temperature 0 C. Determine the initial volume and final pressure of
the gas if the gas is compressed to half of its initial volume and its temperature is
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500 C. Mass of an oxygen molecule = 5.32  10 kg. [5 m]

PSPM JAN 2000/2001 SF015/2 No. 7

23
5. A carbon dioxide gas of mass 22.0 g contains 3.01  10 molecules at pressure 1.0 atm
and temperature 0 C. Calculate the number of molecules of oxygen gas which has of
1
4
volume of carbon dioxide gas at pressure 1.5 atm and temperature 68 C. [4 m]

PSPM JAN 2000/2001 SF015/2 No. 14(a)

6. A tank is filled with 2.00 litres of air at pressure 2.0 atm and temperature 293 K. The
tank is then sealed with glue to prevent the air leakage. After that the tank is heated
until its pressure becomes 4.0 atm.

(a) Calculate the final temperature by assuming the volume is constant. [3 m]

(b) If the temperature is maintained as 293 K, and the gas expand until the pressure
becomes 1.0 atm, calculate the final volume. [3 m]

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