Calculate the equilibrium constant `(K_(c))` for the reaction given below , if at equilibrium maxture contains 5.0 mole of `A_(2)`,3 mole of `B_(2)` and 2 mole of `AB_(2)` at 8.21 atm and 300K `A_(2)(g)+2B_(2)(g)hArr2AB_(2)(g)+Heat`
A
`1.333`
B
`2.66`
C
`20`
D
none of these
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b
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