Which of the following ions require the largest quantity of electricity for discharge at an electrode?

lilblessingjnr

9 years ago

Admin, ur answer is damn f**king wrong. Yes because 2 moles of Al^3+ requires 6 Faradays of electricity While 2.5 moles of Cu^2+ requires 5 faradays of electricity. Pls the correct answer is D. Add me up if u need any explanation guys.

Dynamy

2 years ago

@myschool
please the right answer should be A
2cl- Cl2 +2e-

which means
1mol of cl needs 2F (2×96500)
4 mols will need 4× 2F = 8F


unlike
Al
2 mols will need 2× 3F = 6F

2.5 mols of Cu will need 2.5 × 2F= 5F
3 mols of Na will need 3 × 1F = 3F.


please check this out

Slimcyph

12 years ago

The ansa is d bcos Al3+ will require 3 faraday which is hihger dan d ordas

regony600

9 years ago

Myschool, are you really seeing all these comments. Please do something

Tofire

3 years ago

well i think it is cl- (option A) cause cl is diatomic so 2×4=8

Jay -jay. west

11 years ago

Think about their molar masses!! (Al=27 etc 2Al3+=27 x 2!! Think

roselyn ajayi

12 years ago

the answer is D

Roqeeb2003

5 years ago

the right answer is D
cos 2 moles of Al3+ Will require 6f of electricity

@materamabilis01

3 months ago

THE ANSWER IS D

Greatestt

7 years ago

MySchool do something, the correct answer is Aluminum.

Demongod

2 years ago

No need to use curse words though

Imoleayomicheal

3 years ago

The answer is correct! the answer is C which is equal to Cu^2+
calculating the quantity of electricity for each atom using m/M=Q(c)/Z(f)

Glo235

2 years ago

please the answer is A

gregory727

12 years ago

Heyyyy! D rite answer dere is Mercury not iron.. Iron help in d formation of blood cell nd dere for cannot be a pollutant. Mercury causes a very deadly disease!

rehoboth2019

6 years ago

the correct answer is D which is s moles of alluminium