Answers To Review HW For Equilibrium Test - Revised 2009

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a. reversible, closed

b. When the rate of the forward reaction = rate of backward reaction

c1) discuss in class
c2) discuss in class
c3) discuss in class

d) Chem rxn and Temp

e) Set of equilibrium concentration of all the species in the bucket

f) more product

g) K = [O2(g)]E3

h. If you stress an equilibrium system, the system will try to get rid of the stress to go back to the original equilibrium.

i1) system can only perform the forward reaction or backward reaction
i2) System can never back to original equilibrium so it creates a new equilibrium
i3) Only substance or attributes (use of energy term for temp and use of number of particles for pressure, determine by adding all coefficients of reactant and same for product) can shift the equilibrium.

j. Decrease Temp (remove/consume Energy), system will make more energy, make more product, favor forward rxn (exo), shift Equil to R

k. Increase Pressure (add particles), system decrease pressure (get rid of particle), make more reactant (3 product particles to 2 reactant praticles), favor backward rxn, shift Equil to L

L. Can either say a) Stress: add OH1-is adding H2O, Rxn: consume H2O, make more reactant, favor backward reaction, shift equilibrium to Left causing solution to get more Yellow.
b) Stress: add OH1- is removing/reducing H3O1+, Rxn: make H3O1+, make more reactant, favor backward reaction, shift equilibrium to Left causing solution to get more Yellow. (Lab condition will not be on section test).

m. 1.67M-2

n. 1.66M

o. 11.9M-1


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