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Question

For the following reaction:
K4[Fe(CN)6]Fe3++CO2+NO3

If the n - factor is (60+x) then the value of x is _________.

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Solution

Oxidation state of C in K4[Fe(CN)6]=+2

Oxidation state of C in CO2=+4

nf due to C=6(42)=12

Oxidation state of N in K4[Fe(CN)6]=3

Oxidation state of N in NO3=+5

nf due to N=6[5(3)]=48

Oxidation state of Fe in K4[Fe(CN)6]=+2

Oxidation state of Fe in Fe3+=+3

nf due to Fe=(32)=1

Therfore, nf of overalll reaction=(12+48+1)=61=(60+1)

Hence, the value of x is 1.

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