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Questions
Give a chemical test to distinguish between the following gases:
Ammonia and hydrogen chloride
Give at least two tests to differentiate between the following gases.
HCl and ammonia
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Solution
| Test | hydrogen chloride (HCl) | Ammonia (NH3) |
|---|---|---|
| 1. Conc. HCl glass rod test | A glass rod dipped in concentrated HCl is brought near the gas. No white fumes are formed. | A glass rod dipped in concentrated HCl is brought near the gas. Dense white fumes of ammonium chloride are formed. |
| 2. Nessler’s reagent test | No action with Nessler’s reagent. | Turns Nessler’s reagent from colourless to pale brown. |
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Hydrogen is present abundantly in the ................
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Ammonia is used to make ................
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Choose terms from the options given in brackets to complete this sentence.
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| List I | List II |
| 1. An atom of hydrogen | A: Chromic oxide |
| 2. A strong oxidising agent | B: Ammonia |
| 3. A promoter used in Bosch process | C: Iron |
| 4. A chemical used in the manufavture of fertilizers | D: One electron |
| 5. The catalyst used in production of a basic gas from nitrogen. | E: Dilute nitric acid |
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