In: Chemistry
The diagram below shows how a chemical reaction in a cylinder with a piston that affects the volume of the system. Use this diagram to answer the following questions.
Which of the following statements best describes the reaction?
Part 1 (1 Point)
Choose one:
A. Work is done by the system on its surroundings.
B. Work is done on the system by the surroundings.
C. No work is being done.
D. A conclusion cannot be determined from the information given.
Part 2 (2 points)
If the reaction is endothermic, what happens to the internal energy of the system when the reaction is proceeding?
Choose one:
A. It increases.
B. It decreases.
C. It remains constant.
D. A conclusion cannot be determined from the information given.
1)
here: Vf < Vi
since W = -P*(Vf-Vi)
since Vf Answer: B 2) Q = positive (since reaction is endothermic) delta E = Q + W Since both Q and W are positive, delta E will be positive This implies internal energy increases Answer: A