Gas is enclosed in a container of 20 cm3 with a moving piston. According to the kinetic theory of gases, what will be the effect on freely moving molecules of the gas if the temperature is increased from 20 oC to 100 oC?
Correct answer: B. The volume will be increased
- A. Pressure will become one half
- B. The volume will be increased
- C. Temperature has no effect on freely moving molecules
- D. Colliding capability of molecule will become lower
Explanation
According to Charles's law, the volume occupied by a fixed amount of gas is directly proportional to its absolute temperature, if the pressure remains constant. Since the piston is movable, hence increased temperature causes the volume to be increased.
Last updated
About Charles's Law
At constant pressure, the volume of a fixed mass of gas is directly proportional to its absolute temperature. Questions involve the Kelvin scale, the equation V₁/T₁ = V₂/T₂, volume-temperature graphs, and the need to distinguish Charles's law from Boyle's law, which relates pressure and volume.
Practise Gases
443 free Gases MCQs from Chemistry, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Exams that ask Chemistry questions like this
Chemistry is on 12 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
Related questions
A certain volume of a gas at zero degree Celsius temperature and 1 atm pressure is 0.5 L. If the temperature is raised to 300 degrees Celsius by keeping the pressure constant, then what will be its final volume?
A child's balloon has a volume 3.80 dm3, when the temperature is 35°C. If the balloon is put in a refrigerator and cooled to 5°C, the approximate volume of the balloon is (assume pressure inside the balloon is equal to atmospheric pressure):
A gas at 27 degrees C is heated at constant pressure until its volume doubles. Its final temperature is
A gas occupies 300 cm3 at 27 degrees Celsius. At constant pressure, what volume will it occupy at 127 degrees Celsius?
At constant pressure, the graph between V and T is: