Part A An equilibrium mixture of SO2, SO3 , and O2 gases is maintained in a 1.60

Question

Part A An equilibrium mixture of SO2, SO3 , and O2 gases is maintained in a 1.60 L flask at a temperature at which K, 37.0 for the reaction 2502 (g) + O2 (g)2503 (g) f the numbers of moles of SO2 and SOs in the flask are equal, how many moles of O2 are present? Express your answer to three significant figures and include the appropriate units. moValue Units Submit Request Answer Part B f the number of moles of SO3 in the flask is fourfold the number of moles of SO2 how many moles of O2 are present? Express your answer to three significant figures and include the appropriate units no,-Value Units

Explanation / Answer

Kc = [SO3]^2 / [SO2]^2 [O2]

A)
number of mol of SO2 = number of mol of SO3
So,
[SO2] = [SO3]
we have:
Kc = [SO3]^2 / [SO2]^2 [O2]
since [SO2] = [SO3]
Kc = 1/ [O2]
37.0 = 1/[O2]
[O2] = 0.0270

Answer: 0.0270

B)
number of mol of SO3 = 4*number of mol of SO2
So,
[SO3] = 4*[SO2]
we have:
Kc = [SO3]^2 / [SO2]^2 [O2]
since [SO3] = 4*[SO2]
Kc = (4*[SO2])^2 / [SO2]^2 [O2]
Kc = 16/ [O2]
37.0 = 16/[O2]
[O2] = 0.432

Answer: 0.432

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