Phosphorus tribromide decomposes to form phosphorus and bromide, like this:

Chemistry

1 answer:

kenny6666 [7]2 years ago

4 0

Answer:

Kp = 9.3x10⁴

Explanation:

The reaction is this:

4PBr₃ (g) ⇄ P₄ (g) + 6Br₂ (g)

We define Kp from the partial pressures in equilibrium

PBr₃ → 97.4 atm

P₄ → 99.2 atm

Br₂ → 97.2 atm

Kp = (Partial pressure Br₂)⁶ . (Partial pressure P₄) / (Partial pressure PBr₃)⁴

Kp = 97.2⁶ . 99.2 / 97.4⁴

Kp = 929551.4533

929551.4533 → 9.3x10⁴

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