1.

Iodine gets 5% dissociated into atoms when 1.0 mole of I_(2)(g) is introduced into an evacuated flask of 1L capacity at 150 K. The K_(c ) for the reaction.I_(2)(g)hArr 2I(g) at 1500 K is :

Answer»

`1.05xx10^(-2)`
`2.1xx10^(-2)`
`10.5`
21

Solution :`{:(I_(2)(g),hArr,2I(g),),("Initial conc.",,1,0),("EQUAL conc.",,1-alpha,2ALPHA):}`
`K_(c ) =((2alpha)^(2))/(1-alpha)`
`=((2xx0.05)^(2))/((1-0.05))`
`=((0.1)^(2))/(0.95)=1.05xx10^(-2)`


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