1.

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/TFor the complete decomposition of CaCO_(3), the temperature in Celsius to be used is

Answer»

<P>1167
894
8500
850

Solution :For decomposition , `K_(p) = 1.`
` :. Log 1 = 7.282 - 8500/ T`
i.e., `7.282 = 8500/T (log 1 = 0 ) `
or `T = (8500)/(7.282) = 1167 K`
`= 1167 - 273 ^(@) C = 894 ^(@)C.`


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