Posted by Sandra on Friday, May 11, 2012 at 1:32am.
A system is represented by the following equation:
2A(aq) + B(aq) > 3C(aq)
At equilibrium, [C]=0.6 M. Calculate the value of K if initially 1 mol of A and 2 mol of B were placed in a 1 L flask.

Chemistry  Dr Russ, Friday, May 11, 2012 at 10:50am
we will assume that the aqueous solutions fill the 1 L flask.
At start
1 mol A + 2 mol B and 0 mol C
At equilibrium
12x mol of A and 2x mol of B and 3x mol of C
so x=0.2 M
K=x^3/(12x)^2(2x)
K=(0.2)^3/(0.6)^2(1.8)
K=0.008/(0.36)(1.8)
K=0.012 (with no units)

Chemistry  Brett, Monday, December 21, 2015 at 2:26pm
I am having trouble with this question so I decided to check online. The question sheet in which I got this question from came with an answer sheet, and it says the answer for k = 0.33. Another online source gave an answer of 0.024. I'm not sure what values are needed in the change row.
2A + B <> 3C
INITIAL 1 2 0
CHANGE +3X
EQUILIBRIUM 0.6 M
If 0.6 = 3x, x should equal 0.2? How is x affecting A + B?
Answer This Question
Related Questions
 Chemistry  PLEASE fully explain these...I've already tried to figure them out ...
 Chemistry  5.6 x 106 mol of A and 5 x 105 mol of B are mixed in a 200 mL ...
 AP Chemistry  The equilibrium constant for thermal dissociation of F2 F2(g)<...
 PLEASE HELP CHEM!!  5.6 x 106 mol of A and 5 x 105 mol of B are mixed in a ...
 chem 12  1.0 mol of each of the gases, CO, H20, CO2 and H2 are placed in a 2....
 chem12  1.0 mol of each of the gases, CO, H20, CO2 and H2 are placed in a 2.00L...
 chem 12  consider the following equilibrium 2NOCl(g) 2 NO(g) + Cl2(g) ...
 Chemistry  The following system is at equilibrium,at 699K in a 5L container. H2...
 Chemistry  Initially, 1.68 mol of PCl5(g) and 0.36 mol of PCl3(g) are in mixed ...
 Chem  I am having problems with these two questions. 1.The value of the ...
More Related Questions