Aluminium oxide may be electrolysed at 1000°C to furnish aluminium metal (Atomic mass =…
Chemistry · NEET · NTA Exams — Electrochemistry
Aluminium oxide may be electrolysed at 1000°C to furnish aluminium metal (Atomic mass = 27 u; 1 F = 96500 C/mol). The cathode reaction is:
\(\mathrm{Al}^{3+}+3 \mathrm{e}^{-} \rightarrow \mathrm{Al}\)
To prepare 5.12 kg of aluminium metal by this method would require:
- 5.49 \(x\) 101 C of electricity
- 5.49 \(x\) 104 C of electricity
- 1.83 \(x\) 107 C of electricity
- 5.49 \(x\) 107 C of electricity
Answer
(D) 5.49 x 10 7 C of electricity
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