1) The equation pV = nRT is applicable for real gas if a) volume is small b) temperature is low c) pressure is low d) volume is large, pressure is high 2) One of the assumptions concerning an ideal gas is a) kinetic energy is lost during collisions b) gas molecules attracts each other c) time of collisions can be neglected d) each molecules moves with rms speed 3) Gas is pumped into a balloon and this causes its diameter to increase until 2 times its original diameter. What is the work done to overcome the atmospheric pressure p? a) pV b) 3pV c) 5pV d) 7pV 4) The root-mean-square of an ideal gas is c. If the gas is heated at constant volume so that its pressure increases from p to 2p, the new root-mean-square speed of the gas is a) sqrt(2) c b) 1/sqrt(2) c c) 2c d) 1/2 c 5) The average kinetic energy for molecules of an ideal gas in a close rigid container is increased by a factor of 4. What will happen to the pressure of the gas? a) constant b) increase by a factor of 2 c) increase by a factor of 4 d) increase by a factor of 8

Thermodynamics

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