C6: REVERSIBLE REACTIONS Flashcards
What is the symbol for a reversible reaction?
⇌
If a reaction is exothermic in the forwards direction, what would it be in the backwards direction?
endothermic
hydrated copper sulfate ⇌ ________ + _________
hydrated copper sulfate ⇌ anhydrous copper sulfate + water
In the forwards direction, is the reaction hydrated copper sulfate ⇌ anhydrous copper sulfate + water endothermic or exothermic?
endothermic
In the backwards direction, is the reaction hydrated copper sulfate ⇌ anhydrous copper sulfate + water endothermic or exothermic?
exothermic
What colour is hydrated copper sulfate?
blue
What colour is anhydrous copper sulfate?
white
ammonium chloride ⇌ ________ + _________
ammonium chloride ⇌ ammonia + hydrogen chloride
What is equilibrium?
-when rate of forward and backward reactions are equal
-concs of reactants and products are constant (but not necessarily equal)
What is required for a reaction to reach equilibrium?
reaction has to happen in a closed system
What is Le Chatelier’s principle?
when you make a change, equilibrium shifts to oppose the change
If temp is increased, how would equilibrium shift to decrease temp?
the equilibrium will shift towards the endothermic direction
If temp is decreased, how would equilibrium shift to increase temp?
the equilibrium will shift towards the exothermic direction
If pressure is increased, how would equilibrium shift to decrease pressure?
the equilibrium will shift to the side with the least moles
If pressure is decreased, how would equilibrium shift to increase pressure?
the equilibrium will shift to the side with the most moles
