Advertisements
Advertisements
प्रश्न
With reference to the reduction of copper (II) oxide , iron (II) oxide, lead (II) oxide and magnesium oxide; place the oxides in order of increasing ease of reduction.[i.e. first write the oxide that is most difficult to reduce and at last, the oxide, that is most easily reduced.]
Advertisements
उत्तर
Magnesium oxide, iron (II) oxide, lead (II) oxide and then copper (II) oxide.
APPEARS IN
संबंधित प्रश्न
How is the following metallic oxide reduced? Write equations:
Iron (ll) oxide
Give equation for the following conversion:Aluminium to sodium aluminate.
For the reaction of a metal oxide. Suggest a reducing agent other than carbon
what is the function of cryolite in the extraction of aluminium, other than acting as a solvent for bauxite?
Name a non-metallic element which forms acidic and neutral oxides
Name a non-metallic element which has a metallic lustre
Write balanced equation for the following reaction:
Reduction of lead (II) oxide by carbon.
If fused metallic chloride is electrolyzed, at which electrode would the metal be obtained?
Give the equation for the reduction of Iron (III) oxide.
The following sketch represents the electroplating of an Iron cup with Nickel metal.
Study the diagram and answer the following questions:

- During electroplating, the iron cup is placed at the cathode. Why?
- Name the ion that must be present in the electrolyte.
- State one condition that is necessary to ensure that the deposit is smooth, firm and even.
- Write the reaction taking place at the cathode.
- What change would you observe at the anode?
