Lecture_Notes_101609b

Lecture_Notes_101609b - and S o for the reaction?...

Info iconThis preview shows pages 1–10. Sign up to view the full content.

View Full Document Right Arrow Icon
Free Energy and Equilibrium y Consider the sublimation of iodine at 25.0 o C. G o rxn = 19.3 kJ y Find G rxn at 25 o C under the following conditions: y P I2 = 1.00 mmHg y P I2 = 0.100 mmHg y Explain why iodine spontaneously sublimates in open air at 25.0 o C.
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Free Energy and Equilibrium y Consider the dissociation of HF. The K a = 7.2 x 10 -4 at 25.0 o C. Calculate G for the reaction under the following conditions. y [HF] = 0.98 M, [H + ] = [F - ] = 2.7 x 10 -2 M y [HF] = [H + ] = [F - ] = 1.0 x 10 -5
Background image of page 2
Consider the same dissociation as the last slide, but [HF] = [F - ] = 0.27 M, [H + ] = 7.2 x 10 -4 M. What is the value of G? 1 7 . 9 k J 3 5 0 kJ 8.95 kJ 27% 11% 29% 34% 1. 17.9 kJ 2. 35.9 kJ 3. 0 kJ 4. 8.95 kJ
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Temperature Dependence of K
Background image of page 4
Temperature Dependence of K y The K b for ammonia is 1.710 x 10 -5 at 20 o C and 1.892 x 10 -5 at 50 o C. What are the values of H o
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 6
Background image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 8
Background image of page 9

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 10
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: and S o for the reaction? Temperature Dependence of K Work and Free Energy y The maximum possible useful (not PV) work obtainable from a process at constant temperature and pressure is equal to the change in free energy. Work and Free Energy y Reversible Process the universe is unchanged once the process is complete y Irreversible Process the universe is changed once the process is complete; all real processes are irreversible processes. Work and Free Energy Practice y CO and NO are polluting gases contained in automobile exhaust. Under certain conditions, these gases can be made to N 2 and CO 2 . y Write a balanced equation for this reaction: y Identify the oxidizing and reducing agents:...
View Full Document

Page1 / 10

Lecture_Notes_101609b - and S o for the reaction?...

This preview shows document pages 1 - 10. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online