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Chemistry
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2SO2g+O2g___>2SO3g

A study of this system reveals that there are 3.7E-3 moles of sulfur dioxide gas, and 4.3E-3 moles of oxygen gas present in a 9.0L flask at equilibrium. The equilibrium constant for this reaction is 4.8E-3. Calculate the number of moles of SO3(g) in the flask at equilibrium. 

May 6th, 2015

DATA:

Moles of SO2 = 3.7*10-3mol = 4.111*10-4 M

Moles of O2 = 4.3*10-3 mol = 4.777*10-4M

Keq = 4.8*10-3

Moles of SO3 =?

SOLUTION:

Keq = [SO3]2/[SO2]2[O2]

[SO3]2 = Keq *[SO2]2[O2]

[SO3]2 = (4.8*10-3)(4.111*10-4)2(4.777*10-4)

[SO3]=6.225*10-7M

Moles of SO3= 5.602*10-6mol


May 6th, 2015

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