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Give three distinct test [apart from using an indicator] you would carry out with a solution of HCl to illustrate the typical properties of an acid. |
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Answer» Three tests are: HCl gas gives thick white fumes of ammonium chloride when glass rod dipped in ammonia solution is held near the vapors of the acid. NH3 + HCl ⟶ NH4Cl With silver nitrate HCl gives white precipitate of silver chloride. The precipitate is insoluble in nitric acid but soluble in ammonium hydroxide. AgNO3 + HCl ⟶ AgCl + HNO3 A greenish yellow gas is liberated when concentrated hydrochloric acid is heated with oxidizing agent like manganese dioxide. MnO2 + 4HCl ⟶ MnCl2 +2H2O + Cl2 |
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