Chemistry
Give reasons for the following:
Conc. sulphuric acid is used as a laboratory reagent in the preparation of iodine from hydrogen iodide.
Related Questions
Select the correct substance from the substances A to J which react with the sulphuric acid to give the product 1 to 10. [State whether the acid used in each case is dilute or concentrated].
A : Iron
B : Sodium carbonate
C : Sodium chloride
D : Formic acid
E : Sodium nitrate
F : Sodium sulphite
G : Ethyl alcohol
H : Sodium sulphide
I : Sodium hydroxide (excess)
J : Hydrogen sulphide
- Product — Sulphur dioxide
- Product — Sulphur
- Product — Hydrogen
- Product — Hydrochloric acid
- Product — Sodium sulphate
- Product — Carbon dioxide
- Product — Carbon monoxide
- Product — Nitric acid
- Product — Hydrogen sulphide
- Product — Ethene
Give reasons for the following:
Sulphuric acid forms two types of salts with an alkali.
Give reasons for the following:
Barium chloride solution can be used to distinguish between dil. H2SO4 and dil HNO3.
Give reasons for the following:
The gaseous product obtained differs when zinc reacts with dilute and with conc. H2SO4 respectively.