Question

2 mole of an ideal monoatomic gas is undergoing a cycle whose internal energy (U) versus volume plot is given. Take \( R =8.3 J / K \)-mol. Answer the following questions for the situation described here 26. As the state of gas is changed from \( C \) to \( A \) the pressure of the gas is a) increasing b) decreasing c) remaining constant d) First increasing, then decreasing 27. The work done by the system on the surroundings in one cycle is (approx) a) \( -2058.4 J \) b) \( 2058.4 J \) c) \( -6640 J \) d) \( -4581.6 J \) 28. The p-v plot for the cycle is a) b) c) d)

Answer 1

26. From \(C \rightarrow A\)

U decreases i.e T decreases Also V decreases.

PV = nRT, Since both V & T decreases with same slope.

\(PV(\downarrow) = nR(T)\downarrow\)

So P must be constant.

Comments

Please solve 27 and 28 also . ( i know we can conclude graph B is correct with this information and we can solve that but i want to know how to solve A-B and B-C by method)