Equilibria Flashcards
rate of reaction
the amount of product that is made in a reaction in a specified time period
what is dynamic equilibrium
when rate of forward reaction same as backward reaction
features of dynamic equilibrium
-concentrations of reactants and products dont change
-in closed system
features of reaction at equilibrium
rates of forward and backward reactions are equal
-reactant and product concentrations are constant
-rates of forward and backward reactions are constant
effect on equilibrium when temp increases
moves in direction of the endothermic reaction
effect of equilibrium when temp decreases
-moves in the direction of the exothermic reaction
what does lachateliers principle state
if any factor that affects the equilibrium changes, then the equilibrium position will move to counteract the change
exam question how yield of product would change if factor effecting equilibrium changes
1-is pressure change which side has more molecules, if temp forward or backward exothermic
2-is position changes to left or right
3-why position changes- to counteract change
4-how change effects yield
why dont catalysts effect equilibrium position
because increases rate of forward and backward reaction equally
compromise conditions
temp not to high as could decrease yield of ammonia but not to low to decrease rate of reaction
conditions used for increasing yield of ammonia
liquidify ammonia to reduce gaseous ammonia
-use iron catalyst
how to compare concentrations at equilibrium
divide conc of products by reactants
what happens as value Kc increases
reactant to product equilibrium increases
equilibrium constant of concentration
-Kc
8.3 times 10 to the 4
equation for Kc
conc of products/ conc of reactants
