Equilibrium Flashcards
What is an example of a reaction where both the forward and backward reactions are occuring?
Cobalt Chloride Paper.
When it is pressed against a damp paper towel, it turns from blue to pink.
When it is damp and heated, water is removed and the paper turns pink to blue.
What is a reversible reaction?
Where both the forward and backward reactions occur.
What does the two way arrow mean?
It means, the forward and backwards reaction is occurring at the same time.
At equilibrium, what happens to the reactions, and what is it called?
The reactions do not stop, they just continue at equal rates. DYNAMIC equilibrium.
How do you tell by graphs where the equilibrium is?
If you start with a pure sample of a substance, it may appear crossed, or both seperate. Whatever has the higher value of concentration, the equilibrium lies to that side.
At equilibrium, what happens to the concentrations?
The concentrations of the reactants and products remain CONSTANT though not necessarily equal.
What happens if the proportion of products is more than reactants?
The equilibrium lies to the right.
What happens if the proportion of the reactants is more than the products?
The equilibrium lies to the left.
If the reaction starts off with only products, or reactants, what happens?
The equilibrium position is the same regardless.
When is dynamic equilibrium true?
In a sealed system, nothing leaves or enters.
