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In the preparation of CaO from CaCO(3) u...

In the preparation of CaO from `CaCO_(3)` using the equilibrium,
`CaCO_(3)(s) hArr CaO(s)+CO_(2)(g)`
`K_(p)` is expressed as
`log K_(p)=7.282-8500/T`
For complete decomposition of `CaCO_(3)`, the temperature in celsius to be used is:

A

1167

B

894

C

8500

D

850

Text Solution

Verified by Experts

The correct Answer is:
B
For complete decomposition, `k_(p)=1`
`:. Log 1 =7.282-(8500)/(T)`
`i.e., 7.282=(8500)/(T) ( log 1 =0)`
or `T =(8500)/(7.282)=1167K`
`=1167-273^(@)=894^(@)`
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