English

The Following Question Relate to the Extraction of Aluminium by Electrolysis. Give the Equation for the Reaction Which Takes Place at the Cathode. - Chemistry

Advertisements
Advertisements

Question

The following question relate to the extraction of aluminium by electrolysis.
Give the equation for the reaction which takes place at the cathode.

One Line Answer

Solution

Reaction at cathode :
Al3+ + 3e- → Al

shaalaa.com
  Is there an error in this question or solution?
Chapter 7: Metallurgy - Exercise 4 [Page 182]

APPEARS IN

Frank Chemistry - Part 2 [English] Class 10 ICSE
Chapter 7 Metallurgy
Exercise 4 | Q 7.1 | Page 182

RELATED QUESTIONS

In the electrolytic refining of a metal M, what would you take as the anode, the cathode and the electrolyte?


The process by which sulphide ore is concentrated.


Name one metal which is extracted by reduction with heat alone.


Name one ore of mercury. Which mercury compound is present in this ore? Write its chemical formula.


Calamine ore can be used to extract one of the following metals. This metal is:
(a) copper
(b) mercury
(c) aluminium
(d) zinc


Aluminum is used in thermite welding:

write reaction for process?


Name the following:

The process of heating an ore to a high temperature in the presence of air.


Aluminium oxide is _______ oxide.


Identify who I am!

Ore of Aluminum- ______


Answer the questions on the following passage.

The minerals from which the metal can be separated economically are called ores. Ores contain many types of impurities such as soil, sand and rocky substances along with metal compounds. These impurities are called gangue.
Metals can be extracted from their ores by means of various methods of separation. The process of extraction of metal in a pure state from the ores is also a part of metallurgy.
Ores are taken out from the mines and the gangue is usually separated from the ore at the site itself by various methods. Then the ores are carried out to the place where metals are produced. Here metals are extracted in pure form. Then metals are further purified by different methods of purification. This entire process is called metallurgy. Most metals being reactive do not occur in nature in the free state but are found in combined state as their salts such as oxides, carbonates, sulphides, and nitrates. however, the most unreactive metals that are not affected by air, water and other natural factors like silver, gold, platinum, generally occur in a free state. The compounds of metals that occur in nature along with the impurities are called minerals.

  1. What are ores?
  2. Which processes are involved in the branch of metallurgy? What is metallurgy?
  3. Which metals are found in a free state?
  4. In what forms are metals found in combined state?
  5. What is gangue?

Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×