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Question -state one observation for the effects of heateach of the following1 zinc nitrate2.Ammonium chloride3.Hydrated copper sulphate .4.Ammonium dichiomate5.Copper carbonate |
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Answer» Answer: 1. On heating, it undergoes thermal decomposition to form zinc oxide, nitrogen DIOXIDE and oxygen. 2. AMMONIUM chloride appears to sublime upon heating but actually decomposes into AMMONIA and hydrogen chloride gas. Ammonium chloride reacts with a strong base, like sodium hydroxide, to release ammonia gas: NH4Cl + NaOH → NH3 + NaCl + H2O. 3. When copper SULPHATE pentahydrate is heated, it loses water of crystallization as a result of evaporation. - Losing water of crystallization turns hydrated copper sulphate into anhydrous copper sulphate salt. On heating, blue coloured copper sulphate crystals become white. 4. Ammonium dichromate decomposes on heating to produce nitrogen gas, water vapor (GASEOUS due to the temperature of the reaction), and solid chromium(III) oxide. 5. When green copper carbonate{CuCO3} is heated it decomposes forming copper oxide {CuO} and carbon dioxide {CO2}. This is a decomposition reaction. |
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