Question on: JAMB Chemistry - 2009
CuO(s) + H2(g) ↔ Cu(s) + H2O(l)
What is the effect of increasing the pressure on the equilibrium reaction above?
What is the effect of increasing the pressure on the equilibrium reaction above?
A
The equilibrium is shifted to the left
B
The equilibrium is shifted to the right
C
There is no effect
D
More H2(g) is produced
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Correct Option: C
* **Understanding Le Chatelier's Principle:** Le Chatelier's principle states that if a change of condition is applied to a system in equilibrium, the system will shift in a direction that relieves the stress. In this case, the stress is the increase in pressure.
* **Analyzing the Reaction:**
* CuO(s) + H2(g) ↔ Cu(s) + H2O(l)
* Pressure affects reactions involving gases. Solids and liquids are generally considered incompressible.
* Count the moles of gas on each side of the equation. There is 1 mole of gas (H2) on the reactant side and none on the product side.
* **Applying the Principle:** Increasing pressure favors the side with fewer moles of gas. In this
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