Question

A metal "X" is found in the form of filings burn vigorously when sprinkled on
flame. When these filings are heated with sulphur, a black colored compound
'Y' is formed which is not attracted by a magnet 'Xreacts with dil. HCl to
liberate hydrogen gas. X reacts with steam to form to form Z' along with
hydrogen gas. Identify 'X', 'Y' and 'Z' and write the chemical reactions
involved.
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Answer 1

Answer:

Elements 'X' is iron. Iron fillings burn vigorously when sprinkled on the flame. These react with sulphur to form ferrous sulphide which is a black colored compound.

Answer 2

Answer:

Ans: We can say that X is a metal that can react with steam and with hydrochloric acid to liberate hydrogen gas. Since ‘X’ is magnetic but its sulphide is non-magnetic, we can say that ‘X’ is iron and ‘Y’ is iron sulphide.

When iron reacts with steam it forms ‘Z’, which is iron (ii, iii) oxide.

Thus – X is Fe

Y is FeS

Z is Fe³ O⁴