1.

What is the equilibrium expression for the reaction :P_(4)(s)+5O_(2)(g)hArr P_(4)O_(10)(s)

Answer»

`K=[O_(2)]^(5)`
`K_(c )=([P_(4)O_(10)])/(5[P_(4)][O_(2)])`
`K_(c )=([P_(4)O_(10)])/([P_(4)][O_(2)]^(5))`
`K_(c )=(1)/([O_(2)]^(5))`

SOLUTION :`K_(c )=(1)/([O_(2)]^(5))`
Concentrations of solids are taken as unity.


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