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Which of the following equilibrium will ...

Which of the following equilibrium will shift left on increasing pressure ?
`(i) " " CO(g) +H_(2) (g) hArr CO_(2)(g) +H_(2)(g) `
`(ii) " " C(s,"diamond") hArr C(s,"graphite")`
`(iii) " " CaCO_(3) (s) hArr CaO(s) +CO_(2)(g)`

A

Only (i)

B

Only (iii)

C

Both (ii) and (iii)

D

None

Text Solution

Verified by Experts

The correct Answer is:
C
Density of diamond is more than that of graphite. As such in this case high pressure shifts the equilibrium in the backward direction.In the equilibrium.
`CaCO_(3) (s) hArr CaO(s) +CO_(2)(g)`
reactants has less volume than products. As such this equilibrium also shifts left on increasing pressure.
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