Question

Two closed bulbs of equal volume $(V)$ containing an ideal gas initially at pressure $p_i$ and temperature $T_1$ are connected through a narrow tube of negligible volume as shown in the figure below. The temperature of one of the bulbs is then raised to $T_2$. The final pressure $p_f$ is :

• A. $p_{i} \left( \frac{T_{1}T_{2}}{T_{1} +T_{2}}\right)$
• B. $2 p_{i} \left( \frac{T_{1}}{T_{1} +T_{2}}\right)$
• C. $2 p_{i} \left( \frac{ T_{2}}{T_{1} +T_{2}}\right)$
• D. $2 p_{i} \left( \frac{T_{1}T_{2}}{T_{1} +T_{2}}\right)$

Answer 1

Answer: (C)

$2 p_{i} \left( \frac{ T_{2}}{T_{1} +T_{2}}\right)$

Answer 2