Displacement reaction between metal and acid solution, requirements for metal, requirements for acid solution

Displacement reaction between metal and acid solution,

Requirements for metals: The migration sequence of metals must be as follows.

H

Previously;

Requirements for acid solution: Acids must be non-oxidizing acids, such as sulfuric acid, hydrochloric acid and oxidizing acids, such as nitric acid and hypochlorous acid;

Displacement reaction between metal and salt solution,

Requirements for metals: Metals can't react with water, and their activity must be greater than that of metals displaced in salt solution, such as Fe.

+

copper sulfate

=

ferrous sulfate

+

In Cu, the activity of iron is greater than that of copper, otherwise the reaction will not occur;

Requirements for salt solution: the activity of metal elements in salt solution must be less than that of metals participating in the reaction.