Question

which of the following acts as reducing agents
a)PO4 ³-
b)So3
c)Po3 ²-
d)NH3​

Answer 1

Answer:

NH3 is the Correct Answer

Explanation:

From N to Bi the size of atom gets increased and tendency to form covalent bonds with H decreases. Therefore the thermal stability also get decreases from the hydrides down the group and also Nitrogen atom has one lone pair of electrons which it can donate and oxidize (loss of electrons) itself. The species which accepts this lone pair of electrons will be reduced.

When dry ammonia gas is passed over heated black copper oxide, it will be reduced to brown copper.

3CuO+2NH3→3Cu+N2+3H2O

Therefore, ammonia is a strong reducing agent.

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