ch 19 equilibrium constants

Question 1

what do yo uput in the collums when calculating Kc

Answer 1

taking into acount the stoichochemistry molar ratio and after removing l or s

initial n
reacted n
equilibrium n
equilibrium conc

then you divide equilibrium conc by tot vols

Question 2

what factor can impact value of K and how so

Answer 2

K value can change with temp.
with an increase in temp: Exothermic reactions K will decreases
Endothermic K increases

Question 3

what impact does catalyst have on K

Answer 3

none no effect on the position of equilibrium or value of k only allows a reaction to reach equilibrium sooner.

Question 4

how do changes in pressure and concentration impact value for K

Answer 4

they dont impact the value of K beacuse they oppose any changes made to restore Kc only tempory

Question 5

what is the realationship between Kc and Kp

Answer 5

they’re proportinal we just se Kp beacuse pressure is easier to measure than volume when it comes to gasses

Question 6

How is partial pressure calculated?

Answer 6

1. calculate the mol fraction of that element (no of moles in x/tot mols present in mixrute) they wil sum to 1
2. partial pressure is mol fraction x total pressure again these values willl sum to 1

Question 7

Kc equation

Answer 7

Kc=[A]^no.of moles[B]/

products/reactants in mols/dm3

Question 8

Kp equation