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Byju's Answer
Standard XII
Chemistry
Introduction to Oxidation and Reduction
Consider the ...
Question
Consider the reaction :
C
r
2
O
2
−
7
+
14
H
+
+
6
e
−
→
2
C
r
3
+
+
7
H
2
O
What is the quantity of electricity in coulombs needed to reduce 1 mol of
C
r
2
O
2
−
7
?
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Solution
According to equation for the reduction of one mole of
C
r
2
O
2
−
7
, 6 mole of electrons are needed.
Hence the amount of electricity require = 6F
= 6 x 96500 C = 579000 C
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