Chemistry - Electrochemistry Question with Solution | TestHub

ChemistryElectrochemistryGalvanic cells/Nernst Equation/Concentration CellsEasy2 minPYQ_2020
ChemistryEasysingle choice

Consider the reaction,

Cr 2 O 7 2 - + 1 4 H + + 6 e - ⟶ 2 Cr 3 + + 7 H 2 O

What is the quantity of electricity in coulombs needed to reduce 1 mole of Cr 2 O 7 2 - ?
(Given: 1F ≈ 96500 C)

Options:

Answer:
A
Solution:

1 mole Cr 2 O 7 2 - require 6 Faraday electricity (6 F)

= 6 x 96500 C = 5.79 x 105C

Stream:NTA_ABHYAS_NEETSubject:ChemistryTopic:ElectrochemistrySubtopic:Galvanic cells/Nernst Equation/Concentration Cells
⏱ 2mℹ️ Source: PYQ_2020

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