Question
Chemistry Question on General Principles and Processes of Isolation of Elements
Blister copper obtained during extraction from cuprous oxide is called so because
A
it has blister like eruptions due to evolution of gas
B
it has a shining surface like blister
C
it is the most impure form of copper
D
its surface is uneven due to different thickness at different places
Answer
it has blister like eruptions due to evolution of gas
Explanation
Solution
Solidified copper obtained is called blister copper since it has blistered appearance due to the evolution of sulphur dioxide gas. 2Cu2O+Cu2S→6Cu+SO2