Chemistry
State how addition of nitric acid to acidified FeSO4, serves as a test for the former.
Answer
When nitric acid is added to acidified FeSO4, conc. sulphuric acid being heavier settles down and the iron [II] sulphate layer remains above it resulting in the formation of the brown ring at the junction.
6FeSO4 + 3H2SO4 + 2HNO3 (dil. ) ⟶ 3Fe2(SO4)3 + 4H2O +2NO
FeSO4 + NO ⟶ FeSO4.NO
Related Questions
State a reason for the inactivity of iron and aluminium on reaction with fuming HNO3.
State your observation when:
(i) nitric acid is added to saw dust
(ii) conc. nitric acid is heated (a) in absence of copper (b) in presence of copper.
Name three chemical products manufactured from nitric acid. Give two general uses of HNO3.
Select the letters A, B, C, D or E, which form the gaseous products of the reactions from 1 to 5.
A: Nitrogen dioxide only
B: Nitric oxide only
C: Hydrogen
D: Nitrogen dioxide and oxygen
E: Nitrogen dioxide and carbon dioxide.- Reaction of manganese with cold, very dil. nitric acid.
- Reaction of sulphur with conc. nitric acid.
- Reaction of zinc with dil. nitric acid.
- Reaction of carbon with conc. nitric acid.
- Heat on nitric acid.