Question

What are amphoteric oxide? Give two example of amphoteric oxideso.

Answer 1

Amphoteric oxides are oxides of metal which can react with both acids and bases

Example- aluminium oxide and zinc oxide

                        (Al2O3)                  (ZnO)

Answer 2

ᴛʜᴏsᴇ ᴍᴇᴛᴀʟ ᴏxɪᴅᴇs ᴡʜɪᴄʜ ʀᴇᴀᴄᴛ ᴡɪᴛʜ ʙᴏᴛʜ ᴀᴄɪᴅ ᴀs ᴡᴇʟʟ ᴀs ʙᴀsᴇ ɪɴ ᴀ ʀᴇᴀᴄᴛɪᴏɴ ᴛᴏ ɢɪᴠᴇ ʀᴇsᴘᴇᴄᴛɪᴠᴇ sᴀʟᴛ ᴀɴᴅ ᴡᴀᴛᴇʀ ᴀs ᴘʀᴏᴅᴜᴄᴛ ᴀʀᴇ ᴄᴀʟʟᴇᴅ ᴀᴍᴘʜᴏᴛᴇʀɪᴄ ᴏxɪᴅᴇs. ғᴏʀ ᴇxᴀᴍᴘʟᴇ ᴀʟᴜᴍɪɴɪᴜᴍ ᴏxɪᴅᴇ (ᴀʟ2ᴏ3) ᴀɴᴅ ᴢɪɴᴄ ᴏxɪᴅᴇ (ᴢɴᴏ)

ᴀʟ2ᴏ3 + 6ʜᴄʟ -> 2ᴀʟᴄʟ3 + 3ʜ2ᴏ

ᴀʟ2ᴏ3 + 2ɴᴀᴏʜ -> 2ɴᴀᴀʟᴏ2 + ʜ2ᴏ

(sᴏᴅɪᴜᴍ ᴀʟᴜᴍɪɴᴀᴛᴇ)