A metal A, which is used in the thermite process, when heated with oxy

1.	A metal A, which is used in the 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.
Answer» Metal A is Aluminium and B is Al₂O₃ With HCl Al₂O₃+ 6HCl → 2AlCl₃+ 3H₂O With NaOH Al₂O₃+ 2NaOH → 2NaAlO₂+ H₂O

A metal A, which is used in the 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.

Answer»

Metal A is Aluminium and B is Al₂O₃

With HCl

Al₂O₃+ 6HCl → 2AlCl₃+ 3H₂O

With NaOH

Al₂O₃+ 2NaOH → 2NaAlO₂+ H₂O