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Question
The nitrate, which undergoes one thermal decomposition, leaves behind a residue that is yellow when hot and white when cold.
Options
Lead nitrate
Ammonium nitrate
Copper nitrate
Zinc nitrate
Solution
Zinc nitrate
Explanation:
Zinc nitrate decomposes to produce zinc oxide, which is yellow when hot and white when cold.
\[\ce{\underset{(White)}{\underset{(Zinc carbonate)}{2Zn(NO3)2}} -> \underset{(White - Cold)}{\underset{(Yellow - Hot)}{\underset{(Zinc nitrate - White)}{2ZnO}}} + \underset{(Carbon dioxide)}{4NO2} + O2}\]
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Complete and balance the following chemical equation:
NH3 + HCl →
The metal nitrate which on thermal decomposition forms a black residue is ______.
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Copper carbonate is heated.
A nitrate, which forms a precipitate with ammonium hydroxide and is also soluble in excess of ______.
State the giving reasons if:
Calcium nitrate and lead nitrate can be distinguished by adding ammonium hydroxide solution to the salt solution.
