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What will be the effect of increased p...

What will be the effect of increased pressure in the following equilibrium reactions ?
(i) H_(2)(g) +I_(2) (g) hArr 2HI(g)`
(ii) N_(2)(g) +3H_(2) (g) hArr 2NH_(3)(g)`
(Iii) N_(2)O_(4)(g) hArr 2NO_(2)(g)`

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The correct Answer is:
(i) No. effect (ii) gets shifted to the right (iii) gets shifted to the left
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