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1. Consider the reaction: CO( g )+2H2( g )CH3OH( g ) An equilibrium mixture of t

ID: 536560 • Letter: 1

Question

1. Consider the reaction:
CO(g)+2H2(g)CH3OH(g)
An equilibrium mixture of this reaction at a certain temperature was found to have [CO]= 0.115 M , [H2]= 0.119 M , and [CH3OH]= 0.215 M .

What is the value of the equilibrium constant at this temperature?

Keq=

2. An equilibrium mixture of the following reaction was found to have [SO3]= 0.421 M and [O2]= 0.155 M at 600 C.

What is the concentration of SO2?
2SO2(g)+O2(g)2SO3(g)
Keq= 4.54 at 600 C

[SO2]=

3. An equilibrium mixture of the following reaction was found to have [I2]= 0.0325 M at 1200 C.

What is the concentration of I ?
I2(g)2I(g)
Keq= 1.3×102 at 1200 C

Express your answer using two significant figures.

help..thank you!

3. An equilibrium mixture of the following reaction was found to have [I2]= 0.0325 M at 1200 C.

What is the concentration of I ?
I2(g)2I(g)
Keq= 1.3×102 at 1200 C

Express your answer using two significant figures.

[I] =

Explanation / Answer

1)

Keq = [CH3OH] / [CO][H2]^2

Keq = (0.215)/(0.115 * 0.119^2)

Keq = (0.215)/(0.115 * 0.119^2)

Keq = 132

Answer: 132

2)

Keq = [SO3]^2 / ([SO2]^2 [O2])

4.54 = 0.421^2 / ([SO2]^2 * 0.155)

[SO2]^2 = 0.2519

[SO2] = 0.502 M

Answer: 0.502 M

3)

Keq = [I]^2 / [I2]

1.3*10^-2 = [I]^2 / (0.0325)

[I] = 2.1*10^-2 M

Answer: 2.1*10^-2 M