Equilibrium Position: How Water Affects System

[nicolauslamsiu]

I want to ask how will the equilibrium position of the system change if water is added to the system?

 

[nicolauslamsiu]

Co^2+(aq.) + 4cl^-1(aq.) =cocl4^2-(aq.)

 

[AlphaEmission]

The concentration will decrease because the volume will increase. This will make Q lower than the K value so the forward reaction should be favored(shifts right)

 

[nicolauslamsiu]

Will the value of Q become smaller the K if the concentration is lower?

 

[nicolauslamsiu]

*become greater

 

[AlphaEmission]

Can you rephrase your question, I'm not sure I understand.

 

[Borek]

The concentration will decrease because the volume will increase. This will make Q lower than the K value so the forward reaction should be favored(shifts right)

Quite the opposite, the more diluted the solution, the more dissociated the complex is.

 

[Entanglement]

By adding water the rate of the forward reaction decreases X to the power 2 times while the rate of the backward reaction will decrease only X times so the reaction moves backwards

 

[Yanick]

Pretend the Keq is 1, and all species' molarity is 1 at the equilibrium. Now do the dilution recalculate Q based on the new concentrations. Compare Q with Keq and reason it out.

 

[Entanglement]

And according to Ostwald's law : degree of dissociation increases by increasing dilution