CHEM 107 Lecture Notes - Lecture 60: Exothermic Reaction, Endothermic Process, Exothermic Process
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A + b c + d + heat. A + b + heat c + d. Reducing the volume (increasing the pressure) will shift the reaction to the side with the fewest moles of gas. Increasing the volume (decreasing the pressure) will shift the reaction to the side with most moles of gas. If gas coefficients sum up to be the same on both sides of reaction, there is no effect. Practice questions: 2so2 + o2 2so3. O2 is added to the system: shifts in the direction toward more reactants, shifts in the direction toward more products, no effect, 2so2 + o2 2so3. The reaction mixture is heated: shifts in the direction toward more reactants, shifts in the direction toward more products, no effect, 2so2 + o2 2so3. The volume of the reaction container is doubled: shifts in the direction toward more reactants, shifts in the direction toward more products, no effect.
