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What is the equilibrium expression for the reaction P 4 s + 5 O 2 ( g ) ⇌ P 4 O 10 ( s ) ?

Options

  1. AK c = P 4 O 10 P 4 O 5 5
  2. BK c = [ P 4 O 10 ] 5 P 4 [ O 2 ]
  3. CK c = O 2 5
  4. DK c = 1 O 2 5

Correct answer

D. K c = 1 O 2 5

Step-by-step solution

In the expression for equilibrium constant ( K p o r K c ) species in solid state are not written ( i . e ., their molar concentrations are taken as 1) P 4 s + 5 O 2 ( g ) ⇌ P 4 O 10 ( s ) Thus, K c = 1 O 2 5

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