Verified Solution • 2025–26 Session moderate

QJEEM19Ch2e9c: JEE Main 2019 Chemistry - Class 11 JEEM19Ch2e9c Solution: In which one of the following equilibria, K p ≠ K C ?

In which one of the following equilibria, Kp ≠ KC ?

Multiple Choice Options

  • A 2NO(g) ⇋ N2(g) + O2(g)
  • B 2C(s) + O2(g) ⇋ 2CO(g)
  • C 2HI(g) ⇋ H2(g) + I2(g)
  • D NO2(g) + SO2(g) ⇋ NO(g) + SO3(g)

Step-by-Step Verified Solution

We know,
Kp = KC(RT)Δng

Kp = KC when Δng = 0
Kp ≠ KC when Δng ≠ 0 and T ≠ 12 K

In this reaction, 2C(s) + O2(g) ⇋ 2CO(g)
Δng = 1, so Kp ≠ KC

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