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Question

(A) Hypophosphorous acid $(H_{3}PO_{2})$: $3(+1) + x + 2(-2) = 0 \Rightarrow x = +1$.$(b)$ Orthophosphoric acid $(H_{3}PO_{4})$: $3(+1) + x + 4(-2) =

Vedclass · Accepted Answer

$(a)-(v), (b)-(i), (c)-(ii), (d)-(iii)$

Vedclass · Answer

(A) Hypophosphorous acid $(H_{3}PO_{2})$: $3(+1) + x + 2(-2) = 0 \Rightarrow x = +1$.$(b)$ Orthophosphoric acid $(H_{3}PO_{4})$: $3(+1) + x + 4(-2) = 0 \Rightarrow x = +5$.$(c)$ Hypophosphoric acid $(H_{4}P_{2}O_{6})$: $4(+1) + 2x + 6(-2) = 0$ $\Rightarrow 2x = 8$ $\Rightarrow x = +4$.$(d)$ Orthophosphorous acid $(H_{3}PO_{3})$: $3(+1) + x + 3(-2) = 0 \Rightarrow x = +3$.Thus,the correct match is $(a)-(v), (b)-(i), (c)-(ii), (d)-(iii)$.

List-$I$ Name of oxo acid	List-$II$ Oxidation state of $P$
$(a)$ Hypophosphorous acid	$(i) +5$
$(b)$ Orthophosphoric acid	$(ii) +4$
$(c)$ Hypophosphoric acid	$(iii) +3$
$(d)$ Orthophosphorous acid	$(iv) +2$
	$(v) +1$

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