Chemistry - CHEMICAL BONDING Question with Solution | TestHub
Oxy acids are the compounds of hydrogen, oxygen and generally a non metal in which –X–O–H linkage is present. These are oxy acids of phosphorus, Sulphur, Nitrogen, Chlorine etc. These oxy acids may contain X–O–X linkage (oxy linkage) , X–O–O–X linkage (peroxy linkage)
Basicity : This term is used for acid and is equal no of replacable hydrogen in an acid molecule.
Number of oxy acids for which basicity is equal to 2 are :-
OC(OH)₂, B(OH)₃, O₂S(OH)₂, H₃PO₄, H₃PO₂, H₂SO₃, Ca(OH)₂, N₂(OH)₂, H₂S₂O₈, H₄P₂O₆
Answer:
Solution:
To find the number of oxyacids with a basicity of 2 (dibasic acids), we count the number of replaceable -OH groups attached to the central non-metal atom:
(), (), , (), and all contain exactly two replaceable -OH groups, giving them a basicity of 2.
The remaining molecules have different basicities: and are monobasic (basicity = 1), is tribasic (basicity = 3), is tetrabasic (basicity = 4), and is a metal base rather than an oxyacid.
Thus, there are exactly 5 such oxyacids.
