What is the quantity of electricity in coulombs needed to reduce 1 mol of cr2o27 ? Consider the reaction:

Question

What is the quantity of electricity in coulombs needed to reduce 1 mol of  Cr₂O₇^2-? Consider the reaction: 

Cr₂O₇^2- +14H ⁺+6e --> 2Cr³⁺ +8H₂O

Answer 1

The given reaction is as follows:

Cr₂ O₇^2- + 14H⁺ + 6e^- → Cr³⁺ + 8H₂O 

Therefore, to reduce 1 mole of Cr₂ O₇^2-, the required quantity of electricity will be:

=6 F

= 6 × 96487 C

= 578922 C