Given two reactions between gases were atequilibrium. How would I determine the
ID: 678415 • Letter: G
Question
Given two reactions between gases were atequilibrium. How would I determine the effect o nthe concentrationof all the gases in order for the reaction to reestablishequilirium after the followign changes are applied? How would Iknow if the concentration increases for hte gas, or decrease, or ifthere's no change. Also how do I know if it shifts left orright?lets say it's 2CO(g) + O2(g) 2CO2(g)change of heat= -484 KJ
how would i find the following for CO, O2, CO2, and the EQ?
a. increase in the temp.
b. decrease in the pressure
c. decrease in the volume
d. remove some O2
e. use ni catalyst
In general tell me how to do such problems?
Explanation / Answer
If heat is added to the products the equilibrium shifts towards thereactants. If the heat is added to the reactants, it is shiftedtowards the products. When something is removed from the products,it shifts towards the products, but if something is added to theproducts it shifts towards the reactants. I'm not sure about thecatalyst, except that it lowers the activation energy, I don'tthink that would affect equilibrium. When reducing the volume thesystem shifts in the direction that reduces the number of moles ofgas. For the reaction N2 (g) + 3H2 (g) -> 2NH3, there are 4molecules of reactants for every two molecules of product. So anincrease in temperature causes a shift towards the side with fewergas molecules, which forms more NH3. When the pressure is increasedthe volume is decreased. So a decreased volume and increase inpressure have the same affect. Hope this helps!
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