A bottle with a white crystalline substance is kept in the chemical laboratory. Under the action of sodium hydroxide
| March 28, 2021 | education
A bottle with a white crystalline substance is kept in the chemical laboratory. Under the action of sodium hydroxide, a light, colorless gas with a pungent odor is released, causing the litmus paper to turn blue. Under the action of hydrochloric acid, a colorless gas is released, causing the lime water to cloud. Write down three equations of chemical reactions carried out to recognize this substance.
Ammonium carbonate, (NH4) 2CO3 is suitable for this description.
The equations of the described reactions:
(NH4) 2CO3 + 2NaOH = 2NH3 ↑ + Na2CO3 + 2H2O – ammonia is released
(NH4) 2CO3 + 2HCl = 2NH4Cl + CO2 ↑ + H2O – carbon dioxide is released
CO2 + Ca (OH) 2 = CaCO3 ↓ + H2O – lime water turbidity
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