unit 1 section 6 equilbria & redox reactions Flashcards
what is dynamic equilibrium
it is when the rate of the forward reaction is equal to the rate of the backwards reaction in a closed system
what is the le chatelier’s principle
if a reaction a equilibrium is subjected to a change in concentration, pressure or temperature, the position of equilibrium will shift to counteract the change
what happens when you increase the amount of reactants of a reaction at equilibrium
the equilibrium will shift in the direction of the products so that more products are made in order to counteract the change.
what happens when you increase the pressure of a reaction at equilibrium
the equilibrium will shift in the direction of fewer molecules, this is to counteract the change in order to reduce the pressure.
what affect does increasing the temperature have on a reaction at equilibrium
it causes the equilibrium to shift in the endothermic direction inorder to absorb the heat and reduce the temperature to counteract the change
what affect does decreasing the temperature have on a reaction at equilibrium
the equilibrium will shift in the exothermic direction inorder to release heat so that the temperature increases in order to counteract the change.
what is kc
it is the equilibrium constant
what is the equation for kc
kc = ( conc of products ) ^ moles at the front of the element / (conc of reactants ) ^ moles at the front of the element
what factors affect Kc
temperature
-if the temperature change causes the products to increase, the kc will increase.
- if the temperature change causes the reactants to increase the kc will decrease.
what is oxidation
it is the gain of oxygen or it is the loss of electrons
what is reduction
it is the gain of electrons or it is the loss of oxygen
What is a redox reaction
It is when reduction and oxidation occur simultaneously in a reaction
What is and oxidising agent
It accepts electrons and is reduced
What is a reducing agent
It donates electron and get oxidised
What is oxidation state
The oxidation state tell you the total number of electrons it has donated or accepted.
