A) Hypophosphorus acid is a diprotic acid
B) All oxo-acids contains atleast one P = O unit and one P-OH group
C) Orthophosphoric acid is used in the manufacture of triple superphosphate
D) All oxo-acids contain tetrahedral four coordinated phosphorus
Correct Answer: A
Solution :
Hypophosphorus acid is monoprotic acid as only one H is attached on oxygen atom. H atoms attached on O are ionisable.
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