Q.

Balance the half reaction, NO2- H+NO3- and calculate the product of number of electrons and H+ ions involved in the balanced half reaction

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a

2

b

8

c

6

d

4

answer is B.

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Detailed Solution

NO2+H2ONO3NO2+H2ONO3+2H+NO2+H2ONO3+2H++2e¯Product  of number of  electrons  and  H+  ions  =2×2=4

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Balance the half reaction, NO2-→ H+NO3- and calculate the product of number of electrons and H+ ions involved in the balanced half reaction