At the very least, an oxoacid must 1) be an acid and 2) contain oxygen.
Ba(OH)2 (barium hydroxide) is a strong base. HCN, HF, and hydrochloric acid (HCl) don't contain oxygen.
Nitrous acid (HNO2) is an acid, and it contains oxygen. And the acidic hydrogen is bonded to an oxygen. Thus, nitrous acid qualifies as an oxoacid.
I don't know if H2PO4 is a typo; if not, then it would properly be written as H2PO4⁻ since it's the first deprotonation product of phosphoric acid, H3PO4. In any case, H2PO4⁻ is still acidic, albeit weakly, and its acidic hydrogens are bonded to the oxygen atoms. Thus, "H2PO4" would qualify as an oxoacid (for that matter, H3PO4 would also be an oxoacid).
Chloric acid (HClO3) is an acid, and it contains oxygen; its acidic hydrogen is bonded to an oxygen atom. Thus, chloric acid qualifies as an oxoacid.
The compound known as an oxyacid in the list is nitrous acid, H2PO4, chloric acid.
An acid is a substance that contains a replaceable hydrogen atom in its molecule. There are several examples of acids such as; HNO3, H2PO4, H2SO4.
An oxyacid is an acid that contains oxygen bonded to the acidic hydrogen. The commonality between all the acids that I gave as examples is that they are oxyacids.
The image of nitrous acid which shows the oxygen - hydrogen bond is attached to this answer.
Learn more: https://brainly.com/question/5675193
