The Hall-Heroult process for the production of aluminum involves the electrolysis of
A) an aqueous solution of Al(NO3) 3.
B) molten Al2O3.
C) molten cryolite,Na3AlF6.
D) a molten mixture of Al2O3 and Na3AlF6.
Correct Answer:
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Q86: O2(g)+ 4 H+(aq)+ 4 e-→ 2 H2O(l)E°
Q87: O2(g)+ 4 H+(aq)+ 4 e- → 2
Q88: Aluminum requires relatively little protection from corrosion
Q89: Which requires the most electricity (in terms
Q90: A constant current is passed through a
Q92: Chromium can be electroplated from an aqueous
Q93: What is least easily oxidized?
A)Al
B)Fe
C)Mg
D)Zn
Q94: A steel pipe can be protected from
Q95: Which statement is true?
A)The cathode is positive
Q96: An electrolytic cell is
A)a battery.
B)a cell in
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