MEDIUMMCQ SINGLENEET ChemistryInorganic ChemistryMetallurgyPrevious Year Questions
The minimum voltage required to electrolyse alumina in the Hall-Heroult process is (Given, o f G Al O 1520kJ mol ; o f G CO 394kJmol ) (AIIMS 2009)
A.1.575 V
B.1.312 V✓ Correct
D.– 2.62 V
Explanation
In Hall-Heroult process, the following reactions occur 2 3 2 3C 2Al CO 4Al 3CO → 3 4Al 12e 4Al → o o o f 2 f 2 3 G 3 G CO 2 G Al O 3 394 2 1520 1858kJ o o cell G nFE o cell 1858 1000 E 1.60V 12 96500 x x
Practice More Like This
Take chapter-wise tests, track your progress, and master Metallurgy.
Start Free Practice →