Partial pressures and the equilibrium constant Kp Quiz
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5 questions, one answer each
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1. A gas mixture contains 0.50 mol of X and 1.50 mol of Y at a total pressure of 400 kPa. What is p(X)?
- A. 100 kPa
- B. 300 kPa
- C. 200 kPa
- D. 0.25 kPa
2. What are the units of Kp for 2SO₂ + O₂ ⇌ 2SO₃?
- A. kPa
- B. kPa⁻¹
- C. kPa²
- D. No units
3. For H₂(g) + I₂(g) ⇌ 2HI(g), what happens to the position of equilibrium when the pressure is doubled?
- A. It shifts left
- B. It shifts right
- C. It does not shift, because there are equal moles of gas on each side
- D. Kp doubles
4. The forward reaction is endothermic. What happens to Kp when the temperature is raised?
- A. It decreases
- B. It stays the same
- C. It becomes zero
- D. It increases
5. Which change alters the value of Kp?
- A. Adding a catalyst
- B. Increasing the pressure
- C. Changing the temperature
- D. Adding more reactant