Chemistry - Ideal Gas Question with Solution | TestHub
The apparatus shown consists of three temperature jacketed 1.642 l bulbs connected by stopcocks. Bulb A contains a mixture of H2O(g), CO2(g) and N2(g) at 27°C and a total pressure of 570 mm Hg. Bulb B is empty and held at a temperature of -73°C. Bulb C is also empty and is held at a temperature of -193°C. The stopcocks are closed and the volume of the lines connecting the bulbs is zero. CO2 sublimes at -78°C and N2 boils at -196°C. Neglect the volume of any solid, if formed.
Both stopcocks are opened and the system is again allowed to come at equilibrium. The pressure throughout the system is 22.5 mm Hg. What do bulbs A, B and C contain?
Options:
Answer:
Solution:
At -193°C (80 K), CO2 is solid (sublimes at -78°C) and H2O is solid, while N2 (b.p. -196°C) is still gaseous and fills all three bulbs; H2O(s) remains in B and deposits in C, CO2(s) collects in the coldest bulb C. Hence (a).
