Chemistry
What do you observe when Cobalt chloride paper is introduced in water vapour? Write balanced equations for your observation.
Practical Chemistry
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Answer
Water vapour turns blue cobalt chloride paper pink.
CoCl2 + 2H2O ⟶ CoCl2.2H2O
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Name:
(a) Two carbonates that do not produce carbon dioxide on heating.
(b) Two nitrates that do not produce nitrogen dioxide on heating.
(c) A brown gas.
(d) A greenish yellow gas.
(e) A gas with rotten egg smell.
Distinguish by heating the following in dry test tube.
Zinc carbonate, copper carbonate and lead carbonate