Question

How do you explain the amphoteric behaviour of amino acids..?​

Answer 1

Answer:

In aqueous solution, the carboxyl group of an amino acid can lose a proton and the amino group can accept a proton to give a dipolar ion known as zwitter ion. Therefore, in zwitter ionic form, the amino acid can act both as an acid and as a base. Thus, amino acids show amphoteric behaviour.

Answer 2

❥ ᴀɴsᴡᴇʀ

❥ ɪɴ ᴀϙᴜᴇᴏᴜs sᴏʟᴜᴛɪᴏɴ, ᴛʜᴇ ᴄᴀʀʙᴏxʏʟ ɢʀᴏᴜᴘ ᴏғ ᴀɴ ᴀᴍɪɴᴏ ᴀᴄɪᴅ ᴄᴀɴ ʟᴏsᴇ ᴀ ᴘʀᴏᴛᴏɴ ᴀɴᴅ ᴛʜᴇ ᴀᴍɪɴᴏ ɢʀᴏᴜᴘ ᴄᴀɴ ᴀᴄᴄᴇᴘᴛ ᴀ ᴘʀᴏᴛᴏɴ ᴛᴏ ɢɪᴠᴇ ᴀ ᴅɪᴘᴏʟᴀʀ ɪᴏɴ ᴋɴᴏᴡɴ ᴀs ᴢᴡɪᴛᴛᴇʀ ɪᴏɴ. ᴛʜᴇʀᴇғᴏʀᴇ, ɪɴ ᴢᴡɪᴛᴛᴇʀ ɪᴏɴɪᴄ ғᴏʀᴍ, ᴛʜᴇ ᴀᴍɪɴᴏ ᴀᴄɪᴅ ᴄᴀɴ ᴀᴄᴛ ʙᴏᴛʜ ᴀs ᴀɴ ᴀᴄɪᴅᴀɴᴅ ᴀs ᴀ ʙᴀsᴇ. ᴛʜᴜs, ᴀᴍɪɴᴏ ᴀᴄɪᴅs sʜᴏᴡ ᴀᴍᴘʜᴏᴛᴇʀɪᴄ ʙᴇʜᴀᴠɪᴏᴜʀ.