Which term describes Amphiprotic?

Which term describes Amphiprotic?

• A. Amphoteric
• B. Amphiprotic
• C. Polyprotic
• D. Neutral

Answer: (B)

Amphiprotic means a species can both donate and accept a proton in acid-base reactions. In Bronsted-Lowry terms, it can act as an acid by giving up a proton or as a base by taking one, depending on what it reacts with. Water is the classic example: with a strong base it donates a proton to form OH−, and with a strong acid it accepts a proton to form H3O+. Others like bicarbonate or dihydrogen phosphate show the same dual behavior in different reactions. This specific proton-transfer capability is what defines amphiprotic. Amphoteric is a broader label for substances that can act as acids or bases in general, not necessarily through proton transfer. Polyprotic refers to acids or bases that can donate more than one proton in successive steps, focusing on the number of protons involved rather than the ability to exchange protons. Neutral simply describes lack of net charge or a pH around 7, not the substance’s acid-base behavior. So the term that precisely describes amphiprotic behavior is amphiprotic.

Amphiprotic means a species can both donate and accept a proton in acid-base reactions. In Bronsted-Lowry terms, it can act as an acid by giving up a proton or as a base by taking one, depending on what it reacts with. Water is the classic example: with a strong base it donates a proton to form OH−, and with a strong acid it accepts a proton to form H3O+. Others like bicarbonate or dihydrogen phosphate show the same dual behavior in different reactions. This specific proton-transfer capability is what defines amphiprotic.

Amphoteric is a broader label for substances that can act as acids or bases in general, not necessarily through proton transfer. Polyprotic refers to acids or bases that can donate more than one proton in successive steps, focusing on the number of protons involved rather than the ability to exchange protons. Neutral simply describes lack of net charge or a pH around 7, not the substance’s acid-base behavior. So the term that precisely describes amphiprotic behavior is amphiprotic.