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Q.

3HNO2→HNO3+H2O+2NO   is a dispraportionation reaction. EW of HNO2 is

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a

M/3

b

3M

c

3M/2

d

2M/3

answer is C.

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Detailed Solution

HN+3O2→HN+5O3+N+2OOHR;HN+3O2→HN+5O3Increase in oxidation states=2EW of HNO2 as reductant =M/2RHR;HN+3O2→NO+2Decrease in oxidation states =1EW of HNO2 as oxidant=M/1EW of HNO2 in the reaction =M2+M1=3M2
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