CHM 2046C Module 13 Chapter 16 Name_____________

Part K: Chapter 16 Key Terms            10 points

 

1. _____________ – the amount of molecular randomness in a system

 

2. _________________ – The total internal energy of an isolated system is constant.

 

3. _________________ –. A thermodynamic state function relating enthalpy, temperature, and entropy

 

4. ___________________  - In any spontaneous process, the total entropy of a system and its surroundings always increases..

 

5. ___________________ – a process that proceeds on its own without any continuous external influence

 

6. ___________________ – entropy change under standard state conditions

 

7. __________________-:The free-energy change for formation of

1 mol  of a substance in the standard state from the most stable form of the constituent elements in their standard states.                                                                                   :

8. ___________________ – the entropy of one mole of a pure substance at 1 atm pressure and a specific temperature, usually 25oC for a gas, 1 M concentration for a solution

 

9. ___________________ The most stable form of an element or compound in the physical state in which it exists at 1 bar and the specific temperature. `.

 

10. _________________ – the study of the interconversion of heat and other forms of energy

 

11. ___________________ The entropy of a perfectly ordered crystalline substance at Zero Kelvin (0 K) is Zero

 

 

 

 

 

Review Terms:

 

12. __________________– the heat change in a reaction or process at constant pressure  ∆H = ∆E + P∆V

 

13.  __________________– The substance being evaluated for energy content in a thermodynamic process.

 

14. __________________ – everything outside the system in a thermodynamic process

 

15. __________________-  a reaction in which heat is evolved and the temperature of the surroundings rises

 

16. __________________- a reaction in which heat is absorbed and the temperature of the surroundings falls

 

17. __________________– a quantity whose value is determined only by the state of the system

 

18. __________________ – the enthalpy change for the hypotheorical formation of 1 mol of a substance in the stanbdard state from the most stable forms of it constituent elements in their standard states.

 

19. _____________________Heat flows into or out of a thermodynamic system so that there is no temperature chane in the system.

 

20. _____________________No heat may flow into or out of a thermodynamic system. The system is perfectly insulated from its surroundings