Equilibria

Question 1

Does a catalyst change the position of equilibrium?
What's a homogenous system? 
What is an expression for Kc of:
   aA+bB=cC+dD
What are a,b,c and d?
When are there no units?
What do large values of Kc indicate?

Answer 1

No just the rate at which it is reached
Where all species are in the same phase 
[A]ax[B]b/[C]cx[D]d
When there are equal moles of reactants and products 
Equilibrium lies to the right

Question 2

What happens to Kc when you increase temp in an exothermic reaction?
What happens to Kc when you increase pressure?
What happens to Kc when you increase concentration?
What happens to Kc when you use a catalyst?

Answer 2

Decreases
No change
No change
No change

Question 3

What is the definition of dynamic equilibrium?
What a physical change?
What is le Chatliers principle?
What can equilibrium be altered by changing?

Answer 3

When the forward and backward reaction are occurring at the same rate and therefor the reactants and products remain constant
Change is state
A system at equilibrium disturbed will move in the direction that opposes the disturbance
Conc,temp,press

Question 4

Why is electrolysis bad for the environment?

Answer 4

Uses fossil fuel
Greenhouse gases
SO2 produced
Carbon produced