Which of the following acid posses oxidising, reducing and complex forming properties?
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a
HNO3
b
HNO2
c
H2SO4
d
HCl
answer is B.
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Detailed Solution
In HNO2, N is in the intermediate oxidation state between its highest and lowest possible oxidation state so it can act as oxidising as well as reducing agent. Also, it forms NO2- ion which forms complex.