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Out of C and CO, which is better reducin...

Out of C and CO, which is better reducing agent for ZnO?

A

Carbon

B

CO

C

Both of these

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
A
The free energy of formation `(Delta G^(@))` of CO from C becomes lower at temperatures above 1180K whereas that `CO_(2)` form C becomes lower above 1273K than `DeltaG^(@)` of ZnO. However, `DeltaG^(@)` of `CO_(2)` from CO is always higher than of ZnO. Hence C can reduce ZnO to Zn but not CO.
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