The reaction N2( g )+O2( g )2NO( g ) is carried out at a temperature at which K

Question

The reaction N2(g)+O2(g)2NO(g) is carried out at a temperature at which Kc = 0.060. The reaction mixture starts with only the product, [NO] = 0.0200 M , and no reactants.

Find the equilibrium concentrations of N2 , O2, and NO at equilibrium.

Express your answer to two significant figures and include the appropriate units.

The reaction N2(g)+O2(g)2NO(g) is carried out at a temperature at which Kc = 0.060. The reaction mixture starts with only the product, [NO] = 0.0200 M , and no reactants.

Find the equilibrium concentrations of N2 , O2, and NO at equilibrium.

Express your answer to two significant figures and include the appropriate units.

Explanation / Answer

       N2(g)+O2(g)2NO(g) ; Kc = 0.06
since no reactants are there then the reaction is reversible.
                             2NO(g) -------> N2 (g) + O2 (g) ; Kc = 1/0.06
initially                  0.02         0       0
at equilibrium    (0.02-x)            x             x
Kc = [N2][O2]/ [NO]^2
1/0.06 = x*x/(0.02-x)^2
x = [N2] = [O2] = 0.016 M
[NO] = (0.02-0.016) = 0.004 M

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