1.

Two moles of ammonia gas are introduced into a previously evacuated 1 L flask in which it partially dissociates at high temperature as:2NH_(3)(g)hArr N_(2)(g)+3H_(2)(g)At equilibrium 1.0 mole of NH_(3)(g)is found. What is K_(c ) ?

Answer»

`0.75`
`1.5`
`1.68
`0.46`

Solution :`{:(,2NH_(3)(g),hArr,N_(2)(g),+,3H_(2)(g)),("INITIAL conc.",2,,0,,0),("At. equal.",1,,0.5,,1.5):}`
`K=([N_(2)][H_(2)]^(3))/([NH_(3)]^(2))`
`=((0.5)(1.5)^(3))/((1)^(2))=1.7`


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