AP Chemistry Question 31: Answer and Explanation
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8. PCl3(g) + Cl2(g) ↔ PCl5(g) ΔH = -92.5 kJ/mol
In which of the following ways could the reaction above be manipulated to create more product?
- A. Decreasing the concentration of PCl3
- B. Increasing the pressure
- C. Increasing the temperature
- D. None of the above
Correct Answer: B
B Increasing the pressure in an equilibrium reaction with any gas molecules causes a shift to the side with less gas molecules-in this case, the product.