1. Pick up the notes.
Get out your homework handouts.
DO NOW

2. Sometimes, you are given Keq and all but one of the concentrations
Sometimes, you are given Keq and all but one of the concentrations. This is called finding the “missing species” – the missing concentration.
MISSING SPECIES

3. SOLVING FOR MISSING SPECIES
What is the concentration of H2 for the following reaction if the final concentrations are I2 = 0.300M, HI = 0.600M , and Keq = 0.255
I H2  2HI
Keq
You have to rearrange the equation to solve for [H2].
SOLVING FOR MISSING SPECIES

4. WHAT YOU CAN DO… You can now do the following:
1. Write an equilibrium expression for any equation.
Solve for Keq if given the EQ concentrations.
3. Solve for a missing species if given Keq and all but one EQ concentration.
WHAT YOU CAN DO…

5. TO DO The Keq Review Practice is due TODAY.
The Study Guide is due tomorrow.
TO DO