Chemistry
Give a chemical test to distinguish between the following pairs of compounds:
(a) Sodium chloride solution and sodium nitrate solution.
(b) Hydrogen chloride gas and hydrogen sulphide gas.
(c) Ethene gas and ethyne gas.
Practical Chemistry
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Answer
(a) Add silver nitrate solution to both the solution, Sodium chloride gives white precipitate of silver chloride. However sodium nitrate shows no reaction with silver nitrate.
(b) On using moist lead acetate paper, hydrogen sulphide reacts to form a black precipitate of lead(II) sulphide, whereas HCl gas does not react with lead salts and show no change.
(c) On adding ammoniacal silver nitrate, no change is seen in ethene whereas white ppt. of silver acetylide is formed in case of ethyne.
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