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The relationship between K p and K c is K p = K c (RT) Δn . What would be the value of Δn for the reaction: NH 4 Cl(s) ⇌ NH 3 (g) + HCl(g) ?

Options

  1. A1
  2. B0.5
  3. C1.5
  4. D2

Correct answer

D. 2

Step-by-step solution

The relationship between K p and K c is given as ⇒ K p = K c (RT) Δn . When, Δ n = moles of gaseous species and Δ n = (moles of product) - (moles of reactant) For the reaction, NH 4 Cl(s) → NH 3 (g) + HCl(g) we have 2 moles of gaseous species in the product side and none in the reactant side. ∴ Δn = 2 − 0 = 2 Hence, 2 is the correct option

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