February 22, 2017

Homework Help: Chemistry

Posted by Tri on Wednesday, October 8, 2008 at 5:17am.

A <---> 2B + C
at a certain temperature the equilibrium pressure of the system is 0.318atm. Determine Kp for this reaction.
2B + C = 0.318atm /3 = 0.106
CO2 = 0.106 atm
NH3 = 2(1.06) atm =0.212 atm

Kp = PNH3 ^2 x PCO2
kp = 0.212^2 x 0,106

is that how this question is done?


For % completion, how do you do it for this question?

Consider the rxn; 4A + B <---> 3C. Initially we had 12 mol of A 12 mol of B in a 2.00L flask, At equilibrium, there is 7.5mol of C in the flask.

Find K and % completion?

I've got K and all the mols at equilibrium when i set up an ice chart for it to go right to equilibrium it goes like this:

4A + B ---> 3C
I| 6 6 0

What must i do to get the %completion because i don't know which is the limiting reactant. thanks!

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