Same chapter3 marksDifficulty: Medium
Why is concentrated sulphuric acid not used in place of dilute hydrochloric acid to prepare hydrogen sulphide from iron(II) sulphide?
Study of Acids, Bases and Salts
3 marksDifficulty: Medium
Name the four types of salts and give one example of each.
Original Khojo Papers practice question — not from a past board paper.
Answer
A normal salt has no replaceable hydrogen and no hydroxide, for example sodium chloride. An acid salt still has replaceable hydrogen, for example sodium hydrogen sulphate. A basic salt still has hydroxide, for example basic lead nitrate. A complex salt gives a complex ion in solution, for example sodium zincate.
No citable source has been recorded for this record. Treat it as practice material, not as fact.
Explanation
A double salt, such as potash alum, gives all its simple ions in solution and is different from a complex salt.
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