Loading in 5 sec....

Chapter 23 Text Review QuestionsPowerPoint Presentation

Chapter 23 Text Review Questions

- 110 Views
- Uploaded on
- Presentation posted in: General

Download Presentation
## PowerPoint Slideshow about 'Chapter 23 Text Review Questions ' - jeff

**An Image/Link below is provided (as is) to download presentation**

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.

- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript

### Chapter 23 Text Review Questions

Answers

CH 23 TEXT #1-26 KEY

- 1.B9. POSITIVE
- 2.B10. ENTROPY & ENTHALPY
- 3.A11. TRUE
- 4.C12 IS NONSPONTANEOUS
- 5.A13. ΔH
- 6.C14. TEMPERATURE
- 7.A15 Keq << 1
- 8.C16.LESS

Ch Review Questions

- 17. A spontaneous rxn is one that proceeds on its own without outside intervention
- 18. Quantitative measure of disorder of substances involved in a reaction. Solids changing to liquids and combustion of fuels.

ΔG = ΔH - T ΔS

#19.

- ΔH / +ΔSALWAYS be spontaneous!

+ΔH / + ΔSSpontaneous at HIGH Temperatures

+ ΔH / – ΔSALWAYS NONSPONTANEOUS.

-ΔH / -ΔSSpontaneous at LOW Temperatures

Ch Review Questions

- 20. Free energy incorporates both entropy and enthalpy. It determines a reaction’s spontaneity. Spontaneous rxns have negative free energy values
- 21. ΔG = ΔH - T ΔSAt high temps the T ΔSterm will cause ΔG to be negative. The driving force is only entropy. Entropy increases as temp increases.

Ch Review Questions

- 22. a) + b) - c) +
- 23.
- a) + ; depends on values of S,H, and T
- b) +; spontaneous
- c) +; spontaneous
- 24. OMIT

Ch Review Questions

- 25. a) - b) - c) -
- 26. a) + b) - c) –
- END CHAPTER REVIEW QUESTIONS