Kp And Kc Relationship
Mediumchemistry
For the reaction PCl₅(g) ⇌ PCl₃(g) + Cl₂(g), the relationship between Kp and Kc is:
Select the correct option:
Solution
Incorrect! Answer:
Kp = Kc(RT)
The general relationship between the equilibrium constant in terms of partial pressures (Kp) and concentrations (Kc) is: Kp=Kc(RT)Δng
- Δng=(moles of gaseous products)−(moles of gaseous reactants) For PCl5(g)⇌PCl3(g)+Cl2(g):
- Δng=(1+1)−(1)=2−1=1 Substituting into the formula: Kp=Kc(RT)1⟹Kp=Kc(RT)
🔒 Solution Hidden from View
Submit your answer to unlock the detailed step-by-step solution.
About This Question
- Subject
- chemistry
- Chapter
- equilibrium
- Topic
- kp and kc relationship
- Difficulty
- Medium
- Year
- 2025
Solution
Correct Answer:
Kp = Kc(RT)
The general relationship between the equilibrium constant in terms of partial pressures (Kp) and concentrations (Kc) is: Kp=Kc(RT)Δng
- Δng=(moles of gaseous products)−(moles of gaseous reactants) For PCl5(g)⇌PCl3(g)+Cl2(g):
- Δng=(1+1)−(1)=2−1=1 Substituting into the formula: Kp=Kc(RT)1⟹Kp=Kc(RT)
This medium difficulty chemistry question is from the chapter equilibrium, covering the topic of kp and kc relationship. It appeared in the 2025 exam.
Looking for more practice? Explore all chemistry questions or browse equilibrium questions on RankGuru.