Purification And Characterisation Of Organic Compounds Question 158
Question: Pb and Sn are extracted from their chief ore by
Options:
A) carbon reduction and self reduction.
B) self reduction and carbon reduction.
C) electrolysis and self reduction.
D) self-reduction and electrolysis.
Show Answer
Answer:
Correct Answer: B
Solution:
[b] $ PbO\And PbSO_4 $ get reduced by PbS itself which is already present in mixture so because the reduction took place by itself hence is known as self-reduction.
$ 2PbO+PbS\xrightarrow{\Delta }3Pb+SO_2\uparrow $
$ PbSO_4+PbS\xrightarrow{\Delta }2Pb+2SO_2\uparrow $
BETA
