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04/12/2021 4:24 pm
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Which of the following act as reducing agents?
(i) PO43- (ii) SO3 (iii) PO32- (iv) NH3
(a) (i), (ii) and (iii)
(b) Only (iii)
(c) (i), (iii) and (iv)
(d) (iii) and (iv)
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04/12/2021 4:26 pm
Correct answer: (d) (iii) and (iv)
Explanation:
In (i) and (ii) both P and S are in highest oxidation state. In (iii) and (iv) ; P has oxidation state of +4 which can be oxidized to +5 state, while in case of NH3 nitrogen has oxidation state of -3 which can be oxidised.