electrolysis of molten CuSO4 Flashcards
1
Q
what are the 4 ions present in copper sulfate solution
A
-sulfate ions
-copper II ions
-hydrogen ions
-hydroxide ions
2
Q
if the metal in the solution is less reactive than oxygen then..
A
the metal will be formed at the negative electrode as normal with molten compounds
3
Q
what do you observe at the cathode
A
pinky brown cathode solid
4
Q
what do you observe at the anode
A
bubbling
4
Q
if the metal in the solution is more reactive than oxygen then..
A
it will stay in solution and hydrogen will be produced at the negative electrode instead
5
Q
why does the blue colour fade
A
because as electrolysis foes on, due to the removal of CU2+ in the solution which gives it its usual blue colour
