(U2) Equilibrium Flashcards
1
Q
What is a reversible reaction?
A
A reaction which goes in both the forward and backward directions
2
Q
When is dynamic equilibria? (4)
A
- reversible reaction
- Where the rate of forward reaction = rate of the backward reaction
- in a closed system
- conc of reactants and products is constant
3
Q
What is equilibrium? (2)
A
- When a reversible reaction has a constant amount
- of each reactant / product
4
Q
What is a homogeneous reaction? (2)
A
- A reaction in which all the reactants and products
- are in the same physical state
5
Q
What is a heterogeneous reaction? (2)
A
- A reaction in which all the reactants and products
- are not in the same physical state
6
Q
State the equation for Kc
When can this be used?
A
- Kc = ([C]c[D]d) / ([A]a[B]b)
- for a reaction in the format:
aA + bB ⇌ cC + dD
7
Q
When is a catalyst homogenous?
A
When the catalyst is in a different phase from the reactants
8
Q
What are the conditions for the HABER process? (3)
A
- 450ºC
- 200 atm
- granulated iron catalyst
9
Q
What are the conditions for the contact process? (3)
A
- 450ºC
- 1-2 atm
- Vanadium (V) oxide catalyst
