equiibria

Question 1

what is dynamic equilibrium

Answer 1

when the rate of the forward reaction equals the rate of the backwards reaction in a closed system. concs of products an reactants remain constant

Question 2

what is le chatelier’s principle

Answer 2

when the conditions of a reaction in equilibrium changes, the equilibrium will shift in order to limit the effect of that change.

Question 3

what is the effect of increasing temperature on a reaction at equilibrium

Answer 3

-the equilibrium will shift in the direction of the endothermic reaction (delta H is positive) so the yield of the endothermic products will increase.

Question 4

what is the effect of increasing pressure on a reaction at equilibrium

Answer 4

-the equilibrium will shift in the direction of the side with fewer moles. the yield of the products on this side of the reaction will increase

Question 5

what is the effect of increasing concentration on a reaction at equilibrium

Answer 5

• the equilibrium will shift in the direction of the side where the products are being made.
• the yield of the products will increase

Question 6

what is the effect of catalysts on a reaction at equilibrium

Answer 6

• the equilibrium doesn’t shift as the catalyst affects the forwards and backwards reaction equally.
• it allows the equilibrium to be reached faster