Question

One g equivalent of Na metal is formed from electrolysis of fused NaCl. No. of mole of Al from the fused Na3AlF6 with the same current passed is

• A. 1
• B. 3
• C. 1/3
• D. 2

Answer 1

Answer: (C)

1/3

Answer 2

Na+ + e– $\longrightarrow$ Na(s)

1mole 1 Faraday Al3+ + 3e– $\longrightarrow$Al(s)

1 Faraday

No. of mole of Al =$\frac { 1 } { 3 }$ mole