Lecture 2 Chemical Equilibrium

Question 1

gibbs free energy of a full reactions when you have stereochemistry and their gibbs free energy each product

Answer 1

sum of products vi deltaf G - sum of reactants vi deltaf G

Question 2

combined gibbs free energy equatiojn using ln

Answer 2

deltarGstandard + RT lnaproducts / areactants

Question 3

value of G at equilibrium

Answer 3

the lowest it can be

Question 4

change in gibbs free energy over a reaction that goes to completion

Answer 4

decreases

Question 5

equation for equilibrium constant

Answer 5

Kc = [products] x [products] / [reactants] x [reactants]^ stereochemical number

Question 6

what does large Kc mean

Answer 6

equilibrium mixture contains more product

Question 7

what does small Kc mean

Answer 7

equilibrium mixture contains more reactant

Question 8

do weak acids have large or small Kc

Answer 8

small

Question 9

do strong acids have small or large Kc

Answer 9

large

Question 10

what is thermodynamic equilibrium constant K defined in terms of

Answer 10

activities

Question 11

units of K

Answer 11

unitless

Question 12

units of Kc

Answer 12

moldm^3 dependent on how many are on the top or bottom of the equation