Give the name and a balanced equation for:
a) A nitrate, which decomposes on heating to liberate oxygen and a coloured gas as gaseous
products.
b) A nitrate, which decomposes on heating to liberate oxygen as the only gaseous product.
c) A nitrate, which decomposes on heating to form a metal.
d) A nitrate, which does not leave any residue on heating.
Answers
Answer:
The names of the compounds and their equations have been presented below:
A: A nitrate, which decomposes on heating to liberate oxygen and a colored gas as gaseous products is Aluminium nitrate. It thermally decomposes to yield aluminum oxide, oxygen gas and the brown-colored fumes of nitrogen dioxide gas.
4Al(NO3)2 → 2Al2O3 + 6NO2 + 3O2
B. A nitrate, which decomposes on heating to liberate oxygen as the only gaseous product is Sodium Nitrate. It decomposes to yield Sodium nitrite and oxygen gas.
2NaNO3 → 2NaNO2 + O2
C. A nitrate, which decomposes on heating to form a metal is Silver Nitrate. It yields silver metal, oxygen and nitrogen dioxide after decomposition
2 AgNO3 → 2 Ag + O2 + 2 NO2
D. A nitrate, which does not leave any residue on heating is Ammonium Nitrate. It yields water vapour and nitrous oxide gases after decomposition.
NH4NO3 → 2H2O + N2O