Od ame: Leanne Chapter 5 Test (95 possible points) Multiple Choice Section 3 poi

Question

Od ame: Leanne Chapter 5 Test (95 possible points) Multiple Choice Section 3 points each 45 points total 1) The internal energy of a system is always increased by A) adding heat to the system B) having the system do work on the surroundings C) withdrawing heat from the system Di adding heat to the system and having the system do work on surroundings the A) one of the following conditions would always result in an B) The system loses heat and does work on the surroundings. The system gains heat and does work on the increase in the internal energy of system? C) The system loses heat and has work done on it by the surroundings. system gains heat and has work done on it by the surroundings. E) None of the above is correct. 3) When a system AE is always negative. absorbs heat and does work B) gives off heat and does work Co absorbs heat and has work done on it D) gives off heat and has work done on it E) None of the above is alsays negative. 4) Which one of the following is an B) water freezing C) boiling soup lydrochloric acid and barium hydroxide are mixed at 25 the temperature increases, E) Both A and C A negative, endothermic negative, exothermic C) positive, exothermic zero, exothermic E) zero, endothermic while AH for an exothermic 6) All for an endothermic process is Bo zero, negative c) positive, zero D) negative, positive positive, negative For a given process at constant pressure, w is positive. This means that the process involves w A) work being done by the system on the surroundings E) work being done by the surroundings on the system C) no work being done D an equal amount of work done on the system and by the system E) work being done against a vacuum

Explanation / Answer

1. Adding heat to the system.

2.The ststem gain heat and work done on it by the surroundings.

3. Gives of heat and does work

4.Melting of ice

5. Negative, Exothermic

6.Positive and negative

7.Work being done by the system on the surroundin

14. -478.8 kJ/mol

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