A metal A, which is used in thermite process, when heated with oxygen gives an oxide B, which is amphoteric in nature. Identify A and B. Write down the reactions of oxide B with HCl and NaOH.

Vinay

3 years ago

Metal A – Aluminium (Al)

Metal B – Aluminium Oxide (Al₂O₃)

With HCl, the following reaction occurs:

Al₂O₃+ 6HCl →2AlCl₃+3H₂O

With NaOH, the following reaction occurs:

Al₂O₃+2NaOH →2NaAlO2+H2O