Which of the following is a reducing acid containing one P-H bond ?
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a
H3PO3
b
H3PO4
c
H3PO2
d
H3PO5
answer is A.
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Detailed Solution
Presence of P-H bonds is responsible for reducing property;More the number of P-H bonds/phosphorous atom , greater will be the reducing power ;Hypo phosphorous acid (or) Phosphinic acid ;H3PO3 contains one P-H bond….It is a reducing agent ;Reducing power of H3PO2> H3PO3