In the diagram shown here, four different processes (isothermal, adiabatic, isob

Question

In the diagram shown here, four different processes (isothermal, adiabatic, isobaric, isochoric) performed on an ideal gas are represented by the four different lines connecting the initial point (V_1. P-1) with the various fluid points shown. Which path number goes with which process? Rank the processes 1.2,3.4 according to the work done on the gas (most positive first; most negative last). Rank the four processes 1,2.3,1 by the change in thermal energy (most positive first: most negative last). Rank the four processes 1,2,3,4 by heat transfer (most positive first: most negative last). The PV graph shown here (not drawn to scale) shows an ideal gas undergoing 8 processes (2 each of isobaric. isochoric. isothermal or adiabatic), labeled a to h. The table below also shows various thermodynamic values for eight processes-corresponding to the eight processes in the graph (but not in any particular order). By using the given values and the graph, identify each process on the graph: In each empty box in the top line of the table, enter the correct label (a to h) from the graph.

Explanation / Answer

question 4

we can judge the process by using first law of thermodynamics

dQ = dU + dW

a) in this process du =0 and dQ = -dW so

isothermal compression

b) isobaric

c) isobaric

d) adiabatic

e) isochoric

f)isothermal compression

g)adiabatic

h)isochoric

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