Two students “A” and “B” got the mixture of iron filings and sulphur powder. “A” heated this mixture strongly but “B” kept it as such. They divided their samples further into three parts and did some tests. Tabulate their observations when: (a) both added dilute HCl to a part of their samples. (b) both added carbon disulphide to another part. (c) both used magnet to separate its constituents on the last part of their respective samples. pls answer!!!!!!!!!!!!!
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Properties of Iron Sulphide
Explanation:
a) Student A observes that diluted HCl reacts with iron suphide to evolve H2S gas
Student B observes that diluted HCl reacts with iron suphide to evolve H2 gas.
b) Student A - Carbon disulphide does not dissolve the Iron Sulphide in the compound.
Student B - Carbon disulphide dissolves the Iron Sulphide in the compound.
c) Student A - Not attracted by the magnet.
Student B - Iron filings in the mixture are attracted towards the magnet.
The above observations lead to the conclusion that the iron sulphide formed by heating is a compound, but the other is a mixture. So iron sulphide of Student A did not exhibit the constituent properties but the mixture of Student B exhibited the properties.
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