Question
Solid carbon, CaO and CaCO_3 are mixed and allowed to attain equilibrium at T K. CaCO _3(s) CaO (s) + CO _2(g) K_ p_1 = 0.08 atm C (s) + CO _2(g) 2 CO (g) K_ p_2 = 2 atm The partial pressure of CO is ________ 10^ -1 atm
JEE Main
Chemistry
Chemical Equilibrium
2026
JEE Main 2026 (08 April Shift 2)
JEE Main Chemistry Question (2026) — Solution
Options
- A. A
- B. B
- C. C
- D. D
Answer
A. A
Step-by-step solution
For the first equilibrium: CaCO _3(s) CaO (s) + CO _2(g) K_ p_1 = P_ CO _2 = 0.08 atm For the second equilibrium: C (s) + CO _2(g) 2 CO (g) K_ p_2 = (P_ CO )^2 P_ CO _2 = 2 atm Substituting the value of P_ CO _2 : (P_ CO )^2 0.08 = 2 (P_ CO )^2 = 0.16 P_ CO = 0.4 atm = 4 10^ -1 atm Answer: 4
Related: Chemistry — Chemical Equilibrium · All PYQ Banks