Exams › JEE Advanced › Chemistry

Which of the following is NOT an assumption of the kinetic theory of gases?

1. Gas particles have negligible volume.
2. A gas consists of many identical particles which are in continual motion.
3. At high pressure, gas particles are difficult to compress.
4. Collisions of gas particles are perfectly elastic.

Correct answer: At high pressure, gas particles are difficult to compress.

Solution

KTG assumes: (1) particles have negligible volume, (2) particles are in constant random motion, (3) collisions are perfectly elastic, (4) no intermolecular forces between particles. The statement that gas is difficult to compress at high pressure describes the behavior of real gases and is NOT a KTG assumption.

Related JEE Advanced Chemistry questions

• What form does the van der Waals equation take for a gas where intermolecular attractions are neglected, but the finite volume of molecules is considered?
• In the van der Waals equation, what does the term (a)/(V²) signify?
• A sealed container holds 10 g of an ideal gas X at 300 K, exerting a pressure of 2 atm. When 80 g of a different ideal gas Y is introduced at the same temperature, the pressure rises to 6 atm. What is the ratio of the root mean square speeds of X and Y at 300 K?
• The compressibility factor Z of a Van der Waals gas is 0.5 at 27 degrees C and 24 atm. Given b = 0.10 L/mol and R = 0.08 L-atm/(K-mol), find the Van der Waals constant a in atm-L²/mol².
• Identify the INCORRECT statement about real gases:
• Which combination of conditions is most favourable for the melting of ice into water?

⚔️ Practice JEE Advanced Chemistry free + battle 1v1 →