calculating the equlibrium concentrations of four gases using their initial concentration

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value of Kc for the reaction CO(g) + H2O(g) <=> CO2(g)+H2(g) is 5.1 at 700 K. Calculate the equilibrium of the four gases if the initial concentration of each of them is 0.0500 M.

Oct 16th, 2017

assume the final concentration of CO is x, then H2O also be x, the concentration of CO2 and H2 will be 0.05+(0.05-x) = 0.1-x , so we have 

(0.1-x)^2/x^2 = 5.1

(0.1-x)/x= sqrt(5.1) = 2.26

3.26x = 0.1

x = 0.0307

so CO and H2O will be 0.0307M, and CO2 and H2 will be 0.1-0.307 = 0.0693M

Mar 29th, 2015

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Mar 30th, 2015

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