Advertisements
Advertisements
Question
Write balanced equation for the following reaction:
Aluminium powder is warmed with hot and concentrated caustic soda solution.
Solution
2Al + 2NaOH + 2H2O → 2NaAlO2 + 3H2
APPEARS IN
RELATED QUESTIONS
Answer the following questions with respect to the electrolytic process in the extraction of aluminum:
Identify the components of the electrolyte other than pure alumina and the role played by each
Explain with reason:
Carbon can reduce lead oxide but not aluminium oxide.
Name the constituents of Solder.
For bauxite, explain its significance in the extraction of aluminium.
In order to obtain 1 tonne of aluminium, the following inputs are required: 4 tonnes of bauxite, 150 kg of sodium hydroxide and 600 kg of graphite. The aluminium compound in bauxite is aluminium oxide and the main impurity is iron (III) oxide. Aluminium is obtained by the electrolysis of aluminium oxide dissolved in cryolite.
- Name the process used for the purification of bauxite.
- Write the equation for the action of heat on aluminium hydroxide.
For the substance listed below, explain its role in the extraction of aluminium: Graphite
Name the following:
The middle region of the blast furnace.
Name the following:
A metal which is always present in the amalgam.
Name the following :
The compound formed by the reaction between calcium oxide and silica.
Name the alloy used for the following purpose.
Surgical instruments