Q
Moderators: Chem_Mod, Chem_Admin
-
- Posts: 51
- Joined: Fri Sep 29, 2017 7:07 am
-
- Posts: 30
- Joined: Thu Jul 13, 2017 3:00 am
Re: Q
Q is usually used to determine which direction the reaction will have to shift towards to reach chemical equilibrium.
-
- Posts: 81
- Joined: Sat Jul 22, 2017 3:01 am
- Been upvoted: 3 times
Re: Q
Yep. its the same thing except its the concentrations of some reaction that isn't at equilibrium and we use Q to compare to K to see how the reaction will shift or change as it heads towards equilibrium
-
- Posts: 32
- Joined: Fri Sep 29, 2017 7:05 am
Re: Q
Yeah, Q is the concentrations of products over reactants just like K, except Q represents any point in the reaction while K is specifically at equilibrium.
-
- Posts: 50
- Joined: Thu Jul 13, 2017 3:00 am
Re: Q
If Q is greater than K, the reaction will shift to the left and if it's less than K then the reaction will shift to the right!
-
- Posts: 53
- Joined: Sat Jul 22, 2017 3:00 am
Re: Q
Q is similar to K (products/reactants) but the amounts of products and reactants used in calculating Q represent the reaction when it is not at equilibrium and is instead in the process of reaching equilibrium. It allows us to compare the current ratio of products and reactants at a certain point in time to K, which should be the final ratio of products/reactants.
-
- Posts: 53
- Joined: Sat Jul 22, 2017 3:00 am
Re: Q
Q and K are written with the same scheme that we learned last quarter.
for reaction aA + bB ---> cC + dD,
K = ([C]^c * [D]^d)/([A]^a * [B]^b)
In a galvanic cell, use the equation for the full reaction (combine the half reactions) to get your products and reactants. The substances that are favored to form should be used as your K equation products. When using K or Q for a concentration cell, consider the side with the higher concentration to be the reactant.
for reaction aA + bB ---> cC + dD,
K = ([C]^c * [D]^d)/([A]^a * [B]^b)
In a galvanic cell, use the equation for the full reaction (combine the half reactions) to get your products and reactants. The substances that are favored to form should be used as your K equation products. When using K or Q for a concentration cell, consider the side with the higher concentration to be the reactant.
Who is online
Users browsing this forum: No registered users and 2 guests