SO3 = 3.00
NO = 2.00
NO2 = 0.500
If you want SO3 to be 4.10, that means adding 1.10 to it. Therefore, NO will be 2.00 + 1.10 = 3.30 at new equilibrium.
SO2 = 4.00+x at new eq.
NO2 = 0.500+x at new eq.
Solve for x and don't forget to add the x amount to 4.00 and to 0.500.
i thought you would have to decrease x from SO2?
I think you are right. Let me think about it and get back. I increased BOTH SO2 and NO2 and that isn't the question. I'll be gone about the next hour or so, then I'll get back.
OK. Ate supper, watched the news, thought about the problem and you are absolutely correct. I appreciate you bringing this to my attention. I just didn't think and I increased BOTH reactants. That isn't what the problem asked us to do.
So we make a minor change.
NO = 3.10
SO3 = 4.10
SO2 = 4.00-x
NO2 = 0.500+x
That way we are increasing NO2, which the problem asked us to do, and the SO3 is adjusting itself to whatever value it needs so that the increased amounts of NO2, SO2, and NO will be off-set and Kc still equals 3.00
I obtained x = 0.841 so the new equilibrium amounts should be
SO2 = 4.00-0.841
NO2 = 0.5 + 0.841
NO = 3.10
SO2 = 4.10
I checked Kc and it is 3.00 with these values.
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