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From equation (i) and (ii), CohArrCO+(...

From equation (i) and (ii),
`CohArrCO+(1)/(2)O_(2)[K_(c1)=9.0xx10^(-12)` at `1000^(@)C]` (i)
`H_(2)OhArrH_(2)+(1)/(2)O_(2)[K_(c2)=7.0xx10^(-12)` at `1000^(@)C]` (ii)
the equilibrium for the reaction
`CO_(2)+H_(2)hArrCO+H_(2)O`
at the same temperature is

A

`0.78`

B

`2.0`

C

`16.2`

D

`1.28`

Text Solution

Verified by Experts

The correct Answer is:
B
The given reactions are
`CO_(2)hArrC+_(1)/(2)O_(2),`
`K_(C_(1))=9.0xx10^(-12) …(i)`
`H_(2)OhArrH_(2)+(1)/(2)O_(2),`
`K_(C_(2))=7.0xx10^(-12) …(ii)`
Subtracting (ii) from (i), we get
`CO_(2)hArrCO+(1)/(2)O_(2),`
`K_(C_(1))=9.0xx10^(-12)`
`H_(2)OhArrH_(2)-(1)/(2)O_(2),`
`K_(C_(2))=7.0xx10^(-12)`
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