Question

A mixture of common salt, sulphur, sand and iron filings is shaken with carbon disulphide and filtered through a filter paper. The filtrate is evaporated to dryness in a china dish. What will be left in the dish after evaporation?
a)Sand
b)Sulphur
c)Iron filings
d)Common salt

Answer 1

Answer. when the mixture is shaken with carbon disulphide only sulphur dissolves to form a yellow coloured compound. Common salt will not dissolve because it is a non-polar solvent. ... Then the filtrate is evaporated to dryness and sulphur will be remained in the china dish after evaporation