What is the order of acidic strength of H3PO4,H3PO3,H3PO2?
Open in App
Solution
The acidic strength is due to the presence of H+ ions. If you look at the structures of H3PO4,H3PO3,H3PO2 you will find H3PO4 has 3 ionizable hydrogens, H3PO3 has 2, H2PO2 has 1. so, certainly, acidic strength is in order H3PO4>H3PO3>H3PO2.