Calculating Q

[kanikubari]

I don't know if this has been asked already but when finding Q, how do you know when to put the reactant on top of the fraction or the product?

[beckyolmedo1G]

When calculating both Q or R you put the products over the reactants.

[caseygilles 1E]

We calculate Q the exact same way we calcuate Kc or Kp, that is
Kc= [products]^a/[reactants]^b
Kp= (P products)^a / (P reactants)^b
The products are always in the numerator.

[kanikubari]

Okay, thanks guys! It confused me on problems like 5.1.9.

[Dong Hyun Lee 4E]

Calculating Q and K are the same. Q is just when the equation is not at equilibrium so you compare that value to K in order to figure out which direction the reaction is going. To calculate Q or K you need to do products over reactants.

[Mercan Bayazit 4E]

When calculating both Q and K we put the products over the reactants, so it is the same as K.

[Mikka Hoffman 1C]

Q is calculated the same way as K, so you will always have products over reactants

[204929947]

when calculating either K or Q, you always have to put [products]/[reactants]