General Principles and Processes of Isolation of Elements - Result Question 7
####7. Considering Ellingham diagram, which of the following metals can be used to reduce alumina?
[2018]
(a) $Fe$
(c) $Zn$
(c) $Cu$
(d) $Mg$
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Solution:
- (d) $Mg$ has more $-\Delta G$ value than alumina. So it will be in the lower part of Ellingham diagram. Metals which have more $-\Delta G$ value can reduce those metal oxides which have less $-\Delta G$ value.
