Iron filings and sulphur were mixed together and divided into two parts, A and B. Part A was heated
strongly while part B was not heated.
Write the observations when:
(a)
Magnet was passed over both A and B.
(b)
Carbon disulphide was added to both A and B.
(c)
Dilute hydrochloric acid was added to both the parts and evolution of gas was seen in both
the cases. How will you identify the gases evolved?
(d)
What condusion can be drawn from the above experiment?
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When iron mixed with sulphur and heated then it forms Ferrous sulphide (B) which on treatment with dilute HCL produces Ferrous chloride and Hydrogen sulphide gas. FeS + HCL →FeCl2 + H2S+ If the mixture is not heated (C) remains as mixture (Fe + S) if it treated with dilute HCI then it produces Hydrogen gas along with Ferrous chloride. Since only iron reacts (Slowly) with HCL. (Fe + S) +2 HCI FeCl2 + H2t
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