Question

Which of the following set of equations represent correct
mode of obtaining Pb from PbS by self-reduction process?
(a) (A) (b) (B)
(c) Both (A) and (B) (d) Neither (A) nor (B)

Answer 1

Neither of the reactions represent self reduction of lead.

Explanation:

• Metallurgy is the process of extraction of pure metal from its ore.

• This science had different processes for different elements which will be more energy efficient, as well as cheap and less time consuming.

• In case of extraction of less electropositive metals from their sulphide ores, self reduction is implied.

• No reducing agents are supplied from outside.

• Like for lead, the lead sulphide ore called Galena is treated with blow of hot air where some of the lead sulphide is transformed into lead oxide.

• Now as they are heated, the lead sulphide reacts with lead oxide to from pure lead and sulphur dioxide.

• 2PbS + 3O2  → 2PbO + 2SO2
• PbS + 2PbO  → 3Pb + SO2

• So among the reaction supplied, Noone de marks the self reduction of lead.

For more information about lead extraction,

https://brainly.in/question/14557959

during extraction of metal from its Ore which tap lead to its purification

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