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Question
Hydrogen chloride dissolves in water to form an acidic solution.
- Name the experiment which demonstrates that hydrogen chloride is very soluble in water.
- Give three distinct tests (apart from using an indicator) you would carry out with this solution to illustrate the typical properties of an acid.
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Solution
- The fountain experiment demonstrates that hydrogen chloride is very soluble in water.
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- When silver nitrate solution is added to hydrochloric acid, it gives a white precipitate of silver chloride.
- When lead nitrate solution is added, it gives a white precipitate of lead chloride.
- When concentrated hydrochloric acid is added to oxidising agents like manganese dioxide, lead dioxide, etc., it liberates chlorine gas, which is a greenish-yellow, pungent-smelling gas.
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