Extent of chemical reactions

Question 1

Equilibrium

-

Answer 1

When the rate of the forward reaction = the rate of the backwards reaction
In a closed system

Question 2

Small k vaule (equilibrium constant) means?

Large k vaule (equilibrium constant) means?

Answer 2

Little forward reaction

Strong forward reaction

Question 3

What is homogeneous equilibrium

Answer 3

When we have equilibrium reaction that involves species all in the same state

Question 4

Concentration-time graphs feature

Answer 4

The forward reaction drops from its high value as the back reaction rises from its low value until the rate of forward and back is equal.

Question 5

Reaction quotient and equilibrium concentration

What is Qc (reaction quotient)

Answer 5

Used to cal the relationship between the concentration of products and reaction during any stage of the reaction.

Question 6

Reaction quotient and equilibrium concentration

What does Kc=Qc mean

Answer 6

Equilibrium reached

Question 7

Kc is only affected by…?

Answer 7

Temperature

Question 8

Equilibrium constant

If Kc > 10^4 the equilibrium contains alot of
If Kc < 10^-4 the equilibrium contains alot of

Answer 8

Products

Reactants

Question 9

If Q>K the _____ reaction is preferred until equilibrium is reached
If Q

Answer 9

Reverse

Forward

Question 10

Whats the formula of Q and K

Answer 10

K=Products^x
————–
Reactants^y

Question 11

What compound isnt counted in the Kc and Qc constant

Answer 11

H2O

Question 12

What is the M of B^2
——
A

Answer 12

M x M
——— = M
M

Question 13

Ice calculations

Answer 13

I initial
C Ep change
——————–
E Equilibrium Note if 1:1 have same initial M

Question 14

Position of equilibrium

What is the Le Chatelier’s Principle

Answer 14

If a system in equilibrium is subject to a change, the system will act as to partially oppose that change

Question 15

Position of equilibrium

Endothermic reaction, K _____ with temperature
Exothermic reaction, K ______ with temperature.

Answer 15

Increases

Decreases

Question 16

Changes on equilibrium

Decreasing pressure by increasing volume (gases)
Adding a catalyst
Adding an inert gase
Adding water (dilution)
Increasing temp for exothermic
Increasing temp for endo
Adding reactants 
Adding products 

Whats the effect of change on equilibrium position

Answer 16

Shifts in direction of most particles
no change
no change
Shifts direction of most particles
left
right
Right
left

Question 17

Volume increase favors….?

Volume decrease favors..?

Answer 17

Forward reaction (wants higher concentration)
Backwards reaction (wants lower concentration)

Question 18

Look at edrolo CO poisoning

Answer 18

Dooooo it