What is the equilibrium constant expression for the reaction, P4(s)+5O2(g)⇌P4O10(s)
A
Kc=[P4O10][P4][O2]5
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B
Kc=[P4O10]5[P4][O2]
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C
Kc=[O2]5
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D
Kc=1[O2]5
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Solution
The correct option is CKc=1[O2]5 The equilibrium constant expression for the reaction, P4(s)+5O2(g)⇌P4O10(s) is Kc=1[O2]5 Note: The concentrations of solids (and pure liquids) are considered unity and do not appear in the equilibrium constant expression.