1.

Two moles of NH_(3) when put into a previously evacuated vessel ( one litre), partially dossociate into N_(2) and H_(2). If at equlib rium one mole of NH_(3) is present, the equlibrium constant is

Answer»

`3//4 mol^(2) litre^(-2)`
`27//64 mol^(2) litre^(-2)`
`27//32 mol^(2) litre^(-2)`
`27//16 mol^(2) litre^(-2)`

SOLUTION :`2NH_(3)hArrN_(2)+3H_(2)`
`{:("INITIAL concentration",2,0,0),("At EQULIBRIUM concentration",1,1//2,3//2):}`
`K_(c)=([N_(2)][H_(2)]^(3))/([NH_(3)]^(2))=(1//2xx[3//2]^(3))/(I^(2))=27/16`
`[Given 2-2x=1,2x=1,x=1//2]`


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