MHT CET2009ChemistryElectrochemistry
The number of electrons required to reduce 4.5 10⁻⁵ ~g of Al is
Options
- A1.03 10¹⁸
- B3.01 10¹⁸
- C4.95 10²⁶
- D7.31 10²⁰
Correct answer
B. 3.01 10¹⁸
Step-by-step solution
27 Al ³⁺ +3 e⁻ 27 ~g Al 27 ~g of Al is reduced by =3 6.023 10²³ e⁻ s 4.5 10⁻⁵ ~g of Al will be reduced by array l = 3 6.023 10²³ 4.5 10⁻⁵ 27 =3.01 10¹⁸ electrons array