Advertisements
Advertisements
प्रश्न
Explain why, an aqueous solution of sodium chloride is not used for the electrolytic extraction of sodium metal.
उत्तर
If an aqueous solution of sodium chloride is used in electrolysis, sodium metal, formed at cathode, will immediately react with water in the aqueous solution to form sodium hydroxide because sodium is a highly reactive metal. Hence, it is important to use molten sodium chloride and not its aqueous solution in electrolytic extraction.
APPEARS IN
संबंधित प्रश्न
How is copper extracted from its sulphide ore? Explain the various steps supported by chemical equations. Draw labelled diagram for the electrolytic refining of copper.
Write the composition of the alloy called bronze.
Name one ore of aluminium. Name the aluminium compound present in this ore and write its chemical formula.
Which of the following metals are extracted by the electrolysis of their molten chlorides?
(a) Na and Hg
(b) Hg and Mg
(c) Na and Mg
(d) Cu and Fe
How many valence electrons are present in metals ?
How many valence electrons are present in non- metals?
Froth floatation process is generally used to concentrate ______ ores.
Extraction of moderately reactive elements is done by _______ and _______ method.
Mercury, silver, gold are highly reactive metals.
Explain in brief types of extraction of moderately reactive metals according to their reactivity.
