Question

1. make a prediction. which salt can be used to electroplate the iron spoons? use evidence to support your answer. type your answer here.

Explanation:

Electroplating involves coating a metal object with another metal. The salt used should contain the metal ions of the coating metal. For example, if we want to electroplate iron spoons with copper, we use copper - sulfate (\(CuSO_4\)) salt. The copper ions (\(Cu^{2 + }\)) in the salt solution will be reduced at the cathode (where the iron spoon is placed) to form copper metal (\(Cu^{2+}+2e^-\to Cu\)).

Answer:

The salt that can be used depends on the metal we want to plate the iron spoon with. If plating with copper, \(CuSO_4\) is used. Evidence: In electroplating, the metal ions in the salt solution are reduced at the cathode (iron spoon) to form the metal coating. For copper plating, \(Cu^{2 + }\) from \(CuSO_4\) gains electrons (\(Cu^{2+}+2e^-\to Cu\)) to deposit on the iron spoon.