The reaction N2(g)+O2(g)⇌2NO(g) is carried out at a temperature at which Kc = 0.050. The reaction mixture...

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The reaction N2(g)+O2(g)⇌2NO(g) is carried out at a temperature at which Kc = 0.050. The reaction mixture...

The reaction N2(g)+O2(g)⇌2NO(g) is carried out at a temperature at which Kc = 0.050. The reaction mixture starts with only the product, [NO] = 0.0300 M , and no reactants.

Part A

Find the equilibrium concentrations of N2 at equilibrium.

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

[N2] =

Part B

Find the equilibrium concentrations of O2 at equilibrium.

Part C

Find the equilibrium concentrations of NO at equilibrium.

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

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Answer 1

Answer #1

Part A

Find the equilibrium concentrations of N2 at equilibrium.

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

The reaction N2(g)+O2(g)⇌2NO(g)

Kc = [NO]^2/[N2][O2]= 0.050

Now ICE table

N2(g)+O2(g)⇌2NO(g)

I 0 0 0.0300

C +x/2 +x/2 -x

E x/2 x/2 0.0300-x

Now kc,

[NO]^2/[N2][O2]= 0.050

(0.0300-x)^2/ x/2*x/2= 0.050

X = 0.027 M

[N2] = X/2= 0.027/2=0.0135M

Part B

Find the equilibrium concentrations of O2 at equilibrium.

[O2] = X/2= 0.027/2=0.0135M

Part C

Find the equilibrium concentrations of NO at equilibrium.

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

[NO]= 0.0300-x = 0.0300-0.027=0.003M

Cross check

Now kc,

[NO]^2/[N2][O2]= 0.050

= (0.003)^2/0.0135*0.0135

=0.050

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