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Effect of Heat on Salts (3)
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Observation for test of nitrogen dioxide gas, NO2 (1)
A strong-smelling brown was released
Observation for test of sulphur dioxide gas, SO2 (2)
The blue color of moist litmus paper turns red
Effect of heat on salt (1)
Most salts decompose when heated
Effect of heat on salt (2)
When heated, most carbonate salts decompose to produce metal oxides and carbon dioxide gas
Effect of heat on salt (3)
Decomposition of zinc carbonate salt, ZnCO3 produces zinc oxide, ZnO and carbon dioxide gas, CO2
Effect of heat on salt (4)
When heated, nitrate salts decompose to produce metal oxides, nitrogen dioxide gas and oxygen gas
Effect of heat on salt (5)
The cation or anion of a salt can be identified based on the gases released when the salt undergoes thermal decomposition
The type of cation present when the residue balance is yellow during hot
Zinc ion, Zn2+
The type of cation present when the residue balance is yellow after cooling
Zinc ion, Zn2+
The type of cation present when the residue balance is brown during hot
Lead(II) ion, Pb2+
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Effect of Heat on Salts (3)
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