UNIT 7
Equilibrium
REACTIONS CAN PROCEED FORWARD AND BE REVERSED
EQUILIBRIUM: WHEN
FORWARD & REVERSED
FORWARD: MERCURY (11) DECOMPOSES REATIONS TAKE PLACE
2 HgO 2 Hg + O2 AT THE SAME TIME
2 Hg + O2 2 HgO
REVERSE: MERCURY & OXYGEN COMBINE
2 Hg + O2 2 HgO represented by:
reaction looks complete but it is
still happening
CHEMICAL DYNAMIC EQUILIBRIUM: for every product formed, reactant
EQUILIBRIUM:WHEN RATE OF FORWARD is consumed
REACTANTS & PRODUCTS REACTION = RATE OF
APPEAR UNCHANGING REVERSE REATION
Increase = shift away from added to use up added substance
Concentration
Decrease = shift forwards substance to replace whats lost
Increase = shift away from heat to use up added heat
Temperature Decrease = shift forwars heat to replace whats lost
Increase = shift forward fever moles to take up less space
Pressure Decrease = shift forwards more moles to take up more space
Solid/liquid Increase = no shift because doesnt affect equilibrium
Catalyst Increase = no shift because both forward & reverse rate increase
Equilibrium
REACTIONS CAN PROCEED FORWARD AND BE REVERSED
EQUILIBRIUM: WHEN
FORWARD & REVERSED
FORWARD: MERCURY (11) DECOMPOSES REATIONS TAKE PLACE
2 HgO 2 Hg + O2 AT THE SAME TIME
2 Hg + O2 2 HgO
REVERSE: MERCURY & OXYGEN COMBINE
2 Hg + O2 2 HgO represented by:
reaction looks complete but it is
still happening
CHEMICAL DYNAMIC EQUILIBRIUM: for every product formed, reactant
EQUILIBRIUM:WHEN RATE OF FORWARD is consumed
REACTANTS & PRODUCTS REACTION = RATE OF
APPEAR UNCHANGING REVERSE REATION
Increase = shift away from added to use up added substance
Concentration
Decrease = shift forwards substance to replace whats lost
Increase = shift away from heat to use up added heat
Temperature Decrease = shift forwars heat to replace whats lost
Increase = shift forward fever moles to take up less space
Pressure Decrease = shift forwards more moles to take up more space
Solid/liquid Increase = no shift because doesnt affect equilibrium
Catalyst Increase = no shift because both forward & reverse rate increase
