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NTA Abhyas NEET2020ChemistryChemical EquilibriumPractice

For which of the following reaction, K p = K c ?

Options

  1. A2 NOCl g ⇌ 2 NO g + Cl 2 g
  2. BN 2 g + 3 H 2 g ⇌ 2 NH 3 g
  3. CH 2 g + Cl 2 g ⇌ 2 HCl g
  4. DPCl 3 g + Cl 2 g ⇌ PCl 5 g

Correct answer

C. H 2 g + Cl 2 g ⇌ 2 HCl g

Step-by-step solution

K p = K c × ( R T ) Δ n ( g ) Δ n ( g ) = Sum of gaseous products – Sum of gaseous reactants K p = K c when Δ n ( g ) = 0 Δ n ( g ) = 2 - 2 = 0 So the correct option is H 2 g + Cl 2 g ⇌ 2 HCl g In rest other options K p and K c can not be equal as Δ n ( g ) is not zero.

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