Purification And Characterisation Of Organic Compounds Question 138
Question: In order to refine “blister copper” it is melted in a furnace and is stirred with green logs of wood. The purpose is
Options:
A) to expel the dissolved gases in blister copper.
B) to bring the impurities to surface and oxidize them.
C) to increase the carbon content of copper.
D) to reduce the metallic oxide impurities with hydrocarbon gases liberated from the wood.
Show Answer
Answer:
Correct Answer: D
Solution:
[d] $ 2Cu_2S+3O_2\to 2Cu_2O+2SO_2 $
$ 3Cu_2O\underset{\begin{smallmatrix} (Fromgreen \\ logsofwood) \end{smallmatrix}}{\mathop{+CH_4}}\to 6Cu+2H_2O+CO $
BETA
