There is 10 l of a gas at STP. Which of the following changes keep the volume constant? [2] — States of Matter and Gaseous State Chemistry Question

💡 Solution & Explanation

For the volume of an ideal gas to remain constant, the ratio T/P must remain constant (V = nRT/P). At STP, T1 = 273 K and P1 = 1.0 bar. Thus, T1/P1 = 273. For option (b), T2 = 546 K and P2 = 2.0 bar, which gives T2/P2 = 546/2.0 = 273. Hence, the volume remains constant. [2]