Question

My professor explained that Not all polyprotic acids are amphiprotic because for instance, the second H of H2SO4 doesn’t come off strongly like the first H. However, this explanation doesn’t explain the reason why H2SO4 is not amphiprotic to me. To me, H2SO4 cannot accept a H+, but can donate a H, which is the reason why it’s not an amphiprotic. In contrast, H2PO4- is amphiprotic because it can accept a H+ to become H3PO4 and also donate a H to become HPO4^2-.

Answer 1

- Amphiprotic species is the one which is also to darate a proton (H+) and also alde to accept a proton (41) According to Banstad - Lowry theory, An aid is a proton deno? - A base is a proton acceptor Hinca amphipotic Species acts as Birded - Lashy acid aswellas Branited - Lowly base. * Examples for ampliarstic species Hoon, Hoom , H₂pon, H₂O etc Hol & Hot - H₂Soot H₂o Chsene acts as Breasted -Lawny base) Asom tot sonant H₂o (Asory acts as Brunsted -Lowly aud) Hencé Hso is amphiprokic * Hot Hot Hot H₂o Hom tot 207+H₂O (BLR) (BLA) * H₂Port H₂ot H₂ poytH₂O ; Hpoitch 2 App +H₂O CALL) (BLA) * Hasole is not Amphiprotic , because it is ready to donate proton - but not ready to accept profoni * All amphiprotic species are also amphaturic. # Amphiperstic species refers to Bronsted alohining theory * Amphoteric refers to different theories of acid and base. CBLN