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In the reaction AB(g) hArr A(g) + B(g) a...

In the reaction `AB(g) hArr A(g) + B(g)` at `30^(@)C, k_(p)` for the dissociation equilibrium is `2.56xx10^(-2) atm`. If the total pressure at equilibrium is 1 atm, then the percentage dissociation of AB is

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The correct Answer is:
4
`AB(g) to A(g) + B(g)`
Applying law of mass action
`K_(p) = (alpha^(2) p)/(1- alpha^(2))` (given p=1 atm)
`rArr alpha =sqrt(1.6 xx 10^(-3)) rArr alpha = 0.04`
% age dissociation = 4%
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