6 Equilibria

what is le chateliers principle?

if there is a change in equilibrium, the equilibrium shifts to counteract that change

LEFT OR RIGHT: when concentration increases on the left

right

what state must all reactants and products be in for a pressure change to affect the reaction?

gas

LEFT OR RIGHT: side A has 1 mole and side B has 2 moles= increase in pressure?

left

LEFT OR RIGHT: increase in temperature (counteracting the exothermic reaction)

left

LEFT OR RIGHT: use of a catalyst

no change

definition of homogeneous systems

when the reactants and products are in the same phase

what is the equation for a reaction that reaches equilibrium?

aA+bB—→cC+dD

WHITEBOARD: write this equation in its constant form (divisional)

done

WHITEBOARD: apply this formula (units) to the divisional form and then work out the units: 2A+B—→ 2C

simplified= 1/moldm-3 —→ mol-1dm3

WHITEBOARD: complete 5 Kc value questions

done

LEFT OR RIGHT: Kc is increased

right

LEFT OR RIGHT: Kc is decreased

left

does the equilibrium constant increase or decrease in an exothermic reaction?

decrease

does the equilibrium constant increase or decrease in an endothermic reaction?

increase

if Kc > 1 then does equilibrium shift to the left or right?

right

if Kc < 1 then does equilibrium shift to the left or right?

left