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NEET2026ChemistryChemical EquilibriumActual

Given below are certain reactions. Identify the reaction for which K_p K_c :

Options

  1. AH ₂ O (g) + CO (g) H ₂ (g) + CO ₂ (g)
  2. BN ₂ (g) + 3 H ₂ (g) 2 NH ₃ (g)
  3. CH ₂ (g) + I ₂ (g) 2 HI (g)
  4. DN ₂ (g) + O ₂ (g) 2 NO (g)

Correct answer

B. N ₂ (g) + 3 H ₂ (g) 2 NH ₃ (g)

Step-by-step solution

The relation between K_p and K_c is given by K_p = K_c(RT)^ n_g , where n_g is the difference between the number of moles of gaseous products and gaseous reactants. For K_p K_c , n_g must be non-zero. For H ₂ O (g) + CO (g) H ₂ (g) + CO ₂ (g) , n_g = 2 - 2 = 0 K_p = K_c For N ₂ (g) + 3 H ₂ (g) 2 NH ₃ (g) , n_g = 2 - 4 = -2 K_p K_c For H ₂ (g) + I ₂ (g) 2 HI (g) , n_g = 2 - 2 = 0 K_p = K_c For N ₂ (g) + O ₂ (g) 2 NO (g) , n_g = 2 - 2 = 0 K_p = K_c Answer: N ₂ (g) + 3 H ₂ (g) 2 NH ₃ (g)

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