Kc- Equilibrium Constant Flashcards
(11 cards)
What is a homogenous equilibrium
Has all reactants and products present in the same phase
What is a heterogenous equilibrium
Has products or reactants in a different phase to the rest
What does Kc express the value of
Expresses the value of the ratio between the concentrations of the products to reactants which is constant in a closed system
What do square brackets indicate [ ]
Indicate concentration in moldm-3
How to calculate equilibrium constant
[products]to power of mole in front of compound in equation/[reactants]to power of mole in front of compound in equation x [reactants]
What value of Kc indicates equilibrium lies further to the right hand side
If value greater than 1
What value of Kc indicates equilibrium lies further to the left hand side
If value of Kc is less than 1
Is the value of Kc affected by concentration change
No
Is the value of Kc affected by the use of a catalyst
No
Is the value of Kc affected by changing the reaction temperature
Yes as the equilibrium positions changes resulting in different concentrations of reactants and products
Why are solids not included in Kc expression
Because the concentration of a solid changes very little
