Chemistry
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
Related Questions
State what are oxidising and reducing agents. Give examples of oxidising and reducing agents in the gaseous, liquid and solid form. Give two tests each generally answered by oxidising and reducing agents respectively.
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 reasons for the following:
Nitric acid in the dilute form is not used in the laboratory preparation of hydrogen from metals.
Give reasons for the following:
Granulated zinc is preferred to metallic zinc in the preparation of hydrogen using dilute acid.