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"7g" of a sample "of IBr" is taken in 0....

"7g" of a sample "of IBr" is taken in 0.2L vessel and heated to `227^(@)C` .At equilibrium , partial pressure of Br_(2) is found to be 3 atm find `K_( p )` for the reaction.
`2IBr(g)toI_(2)(g)+Br_(2)(g)`
[[I=127g/mol,Br=80g/mol]
[[" (A) "6.94," (B) "10.2],[" (C) "6," (D) "4.5]]`

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