Question #a2c21
1 Answer
The equilibrium concentration of
Before actually doing any calculations, take a second to look at the equilibrium constant for this reaction,
In other words, at equilibrium, the concentrations of the products,
To actually solve this problem you'll have to use the ICE Chart method (more here: http://en.wikipedia.org/wiki/RICE_chart).
Calculate the initial concentration of the reactant by using the number of moles and the volume of the vessel given
Now use the ICE table - remember that each species' concentration changes proportional to their respective stoichiometric coefficients
....
I.....0.4.....................0..............0
C...
E...(0.4-2x).............2x...............x
Use the definition of the equilibrium constant to solve for
Because
The value of
Rounded to two sig figs, although it would be better if the answer was rounded to one sig fig - this is because of the number of sig figs in 2 moles and 5 liters, the answer will be
SIDE NOTE If you don't neglect the 2x term in the denominator, the value of x will be 0.00425, which will make the equilibrium concentration of CO equal to