# Homework Help: Equilibrium position

1. Apr 17, 2014

### nicolauslamsiu

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

2. Apr 17, 2014

### nicolauslamsiu

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

3. Apr 17, 2014

### 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)

4. Apr 18, 2014

### nicolauslamsiu

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

5. Apr 18, 2014

### nicolauslamsiu

*become greater

6. Apr 18, 2014

### AlphaEmission

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

7. Apr 18, 2014

### Staff: Mentor

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

8. Apr 18, 2014

### 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

9. Apr 18, 2014

### 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.

10. Apr 20, 2014

### Entanglement

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