Chemistry
Give reasons for the following:
Nitric acid in the dilute form is not used in the laboratory preparation of hydrogen from metals.
Related Questions
Select from A to G the reactant added, to give the products 1 to 5, in the preparation of hydrogen gas.
A : dilute acid
B : dilute alkali
C : cold water
D : conc. alkali
E : boiling water
F : conc. acid
G : steam- Ca(OH)2 + H2
- MgO + H2
- Fe3O4 + H2
- Al2(SO4)3 + H2
- NaAlO2 + H2
Give balanced equations for the following conversions, 1 to 5.
- MgCl2 ⟵ HCl ⟶ FeCl2
- KAlO2 ⟵ KOH ⟶ K2ZnO2
- ZnO ⟵ H2O ⟶ Fe3O4
- CO + H2 ⟵ H2O ⟶ CO2 + H2
- NH3 ⟵ H2 ⟶ H2S
Give reasons for the following:
Granulated zinc is preferred to metallic zinc in the preparation of hydrogen using dilute acid.
Give reasons for the following:
Hydrogen and alkali metals of group 1 [IA] react with copper [II] oxide to give copper.