For the exothermic reaction below, currently at equilibrium, indicate for every change whether the reaction will...

For the exothermic reaction below, currently at equilibrium, indicate for every change whether the reaction will shift to the right (making more products), backward (making more reactants), or no change.

Cu(OH)₂ (s) + 2 OH ^– (aq) Cu(OH)₄^–2 (aq)

Adding more Cu(OH)₂

Adding some NaOH

Adding some HNO₃

Adding some NaNO₃

Increasing the temperature of the reaction

Decreasing the volume by removing some solvent

Solutions

Expert Solution

1)we are adding a reactant
According to LeChattelier's Principle,
Adding reactant will shift reaction towards product side
Answer: Equilibrium moves to product side

2) NaOH is nothing but OH-.
we are adding a reactant
According to LeChattelier's Principle,
Adding reactant will shift reaction towards product side
Answer: Equilibrium moves to product side

3)
adding H+ will remove OH-
It is like removing reactant
Answer: Equilibrium moves to reactant side

4)
NaNO3 is not part of equilibrium
It will not effect equilibrium
Answer: No change

5)Forward reaction is exothermic in nature
we are decreasing temperature or removing heat here
so, according to Le Chatellier's principle,
equilibrium will move in direction which release heat
hence, forward reaction will be favoured
Answer: Equilibrium moves to product side

6)We are decreasing volume here
In other words we are trying to increase pressure
so, according to Le Chatellier's principle,
Reaction will try to decrease the pressure
Hence it will move in a direction which have lesser gaseous molecules
Here, number of gaseous molecules is same on both side
So equilibrium will not be effected
Answer: No effect on equilibrium

queen_honey_blossom answered 1 year ago

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