P-V diagrams

Question 1

area under line

Answer 1

work done

Question 2

arrows

Answer 2

show direction the change is happening in

Question 3

isotherm

Answer 3

p-V curve for an isothermal process

Question 4

what is the differnece between the p-V graph for isothermal expansion and compression

Answer 4

direction of arrow

Question 5

how the curve change at different temperature

Answer 5

• higher temp, further the orgin the isotherm will be

Question 6

what is the difference between p-V diagrams for adiabatic processes and isotherms?

Answer 6

• steeper gradient
• gas does less work if it expands adiabatically instead of isothermally
• the area under the adiabatic curve is larger than the area under the isothermal curve so more work is done to compress gas adiabatically than isothermally

Question 7

constant volume p-V graph

Answer 7

• straight verticla line
• no work done
• caused by change in temperature

Question 8

constant pressure p-V diagramss

Answer 8

• horizontal straight line
• work done is rectangle under graph
• w = pΔV

Question 9

cyclic process

Answer 9

• creat loop ona p-V diagram
• start at certain pressyure and return to the at end of a cycle

Question 10

net work done of cyclic process

Answer 10

• difference between the work done by a system and the work done to the system
• this equals area under the loop
• work done per cycle = area of loop