A sample of SO3 is introduced into an evacuated sealed container and heated to 600 K. The following equilibrium is established:
2SO3(g)?2SO2(g)+O2(g).
The total pressure in the system is found to be 3.0 atm and the mole fraction of O2 is 0.12.
Find Kp.

i would say b

explanation:

but i think i would need more information than that

a. energy is absorbed in the reaction.

if in a given reaction the energy of products is greater than the energy of reactants it means that reaction is endothermic and during the reaction, the energy is absorbed by reactants. in an endothermic reaction, the products have more stored chemical energy than the reactants. and in this reaction the reactants are more stable than products before the compounds with less energy are always more stable.

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