 # How much work is done when the ideal gas is expanded from V 1 to V 2 at constant pressure? A] 0 B] nRT 2 C] nRT 1 D] nR(T 2 -T 1 ) E] it depends on whether.

## Presentation on theme: "How much work is done when the ideal gas is expanded from V 1 to V 2 at constant pressure? A] 0 B] nRT 2 C] nRT 1 D] nR(T 2 -T 1 ) E] it depends on whether."— Presentation transcript:

How much work is done when the ideal gas is expanded from V 1 to V 2 at constant pressure? A] 0 B] nRT 2 C] nRT 1 D] nR(T 2 -T 1 ) E] it depends on whether is it monatomic or diatomic. What is the difference in internal energy of the gas at points 1’ and 2 ?

For the cyclic process shown, W is: A] 0, because it’s a loop B] p 0 V 0 C] - p 0 V 0 D] 2 p 0 V 0 E] 6 p 0 V 0 For the cyclic process shown,  U is 0 For the cyclic process shown, Q is: For ONE cycle: Q=2p 0 V 0 =W

Is ALL heat that we add converted into work? In other words, is there any part of the cycle where heat is removed from the gas? A] No heat is removed B] Segment 3-4 only C] Segment 4-1 only D] Segments 3-4-1 E] Segments 3-4-1-2

An ADIABATIC PROCESS is one in which no heat transfer occurs. Q=0. If we expand a gas from V A to V B adiabatically, what will be the final pressure? A] More than P B B] Less than P B C] Equal to P B D] cannot determine

We saw that there is always heat “rejected” in a thermodynamic cycle = Q c