## Re: Q and Ke: Small K value and Large K value

Elizabeth Harty 1A
Posts: 125
Joined: Sat Jul 20, 2019 12:16 am

### Re: Q and Ke: Small K value and Large K value

What exactly is the reaction quotient?

Posts: 100
Joined: Wed Sep 18, 2019 12:19 am

### Re: Q and Ke: Small K value and Large K value

The reaction quotient or Q is the ratio of the products over the reactants at whatever time you calculated the concentrations at. We then compare this ratio to the known K value or equilibrium constant to see if the reaction is still going and in what direction.

Posts: 103
Joined: Sat Aug 17, 2019 12:18 am

### Re: Q and Ke: Small K value and Large K value

Q is the value of products over reactants at any given time in the equation. K is the value of products over reactants when the reaction has reached equilibrium.

Kayli Choy 2F
Posts: 100
Joined: Sat Aug 24, 2019 12:17 am

### Re: Q and Ke: Small K value and Large K value

The reaction quotient, Q, is calculated in the same way in which K is calculated. If Q < K, the reaction is proceeding forward, toward products. If Q > K, the reaction is proceeding in reverse, toward reactants.

505316964
Posts: 95
Joined: Thu Jul 11, 2019 12:17 am

### Re: Q and Ke: Small K value and Large K value

If Q is less than K this tells you that products still need to form, so the reaction will go forward.
If Q is greater than K it tells you that there are more products and the reaction must go back towards the reactants.

Vinita Saxena 2I
Posts: 58
Joined: Fri Aug 09, 2019 12:16 am

### Re: Q and Ke: Small K value and Large K value

Q changes based on where the reaction is, whereas K does not change except when temperature changes.

504939134
Posts: 103
Joined: Wed Sep 18, 2019 12:21 am

### Re: Q and Ke: Small K value and Large K value

The reaction quotient is the amount of products over reactants at any time during the Rxn, it is calculated the same way as K but it is not at equilibrium.

pmokh14B
Posts: 107
Joined: Sat Aug 17, 2019 12:15 am

### Re: Q and Ke: Small K value and Large K value

the reaction quotient is basically the equilibrium constant at a moment where the reaction is not at equilibrium. It can provide insight into which direction the reaction will proceed.