Question

Question 5.2 A vessel of 120 mL capacity contains a certain amount of gas at 35 °C and 1.2 bar pressure. The gas is transferred to another vessel of volume 180 mL at 35 °C. What would be its pressure?

Class XI States of Matter Page 153

Answer 1

here we see in both condition temperature of gas at 35°C . e.g.,T = constant .
hence, we have to apply Boyle's law
$e.g., P_1V_1=P_2V_2$
here, P1 = 1.2 bar , V1 = 120mL
P2 = ? , V2 = 180 mL

now, 1.2 × 120 = P2 × 180
P2 = 0.8 bar

hence, pressure would be = 0.8 bar