Le Chatelier's Principle Video Lessons

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Concept:

Problem: Each of the following reactions is allowed to come to equilibrium and then the volume is changed as indicated. Predict the effect (shift right, shift left, or no effect) of the indicated volume change.CO(g) + H2O(g) ⇌ CO2(g) + H2(g)(volume is decreased)PCl3(g) + Cl2(g) ⇌ PCl5(g)(volume is increased)CaCO3(s) ⇌ CaO(s) + CO2(g)(volume is increased)

FREE Expert Solution

According to Le Chatelier’s Principle, if a system (chemical reaction) is at equilibrium and we disturb it, then the system will readjust to maintain its equilibrium state.

Doubling the volume of the container (increasing the total volume) is the same as decreasing the total pressure. (Recall Boyle’s Law)


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Problem Details

Each of the following reactions is allowed to come to equilibrium and then the volume is changed as indicated. Predict the effect (shift right, shift left, or no effect) of the indicated volume change.

CO(g) + H2O(g) ⇌ CO2(g) + H2(g)
(volume is decreased)

PCl3(g) + Cl2(g) ⇌ PCl5(g)
(volume is increased)

CaCO3(s) ⇌ CaO(s) + CO2(g)
(volume is increased)

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