Zinc is not plated on iron. Is it correct?
Answers
Answered by
0
Answer:
Yes, that's essentially true. For reasons which I confess to having never actually studied, the presence of the carbon in alkaline conditions causes the evolution of hydrogen in lieu of the deposition of zinc. According to standard potentials, hydrogen should evolve before zinc deposits, but it doesn't actually happen in acid baths, nor in alkaline baths when no carbon is present. But in alkaline baths with carbon present the "hydrogen over-voltage" is dissipated, and hydrogen evolves instead of zinc depositing :-)
Before the development of practical acid zinc plating in the mid 1970s, such items often would be cadmium plated instead of zinc plating them.
Answered by
0
Answer:no it's not correct
Explanation:
Similar questions