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Question:

Why do copper ions insert aluminum wire and red material will appear on the surface of aluminum wire?

Why do copper ions insert aluminum wire and red material will appear on the surface of aluminum wire?

Answer:

The function activity of metal is the standard electrode potential of metal (up to E) and the standard Gibbs free energy reaction with water (G, up to) and their transformation formula between the:Turn left and turn right |Therefore, the more negative the electrode potential, the greater the free energy and the stronger the activity. A factor free energy is the enthalpy change (delta H). When the metal elements form cations in water, they undergo sublimation, ionization, hydration, and the three steps have energy changes in the three steps, which determine the total enthalpy change, and have a great impact on the activity of metals. Therefore, the sublimation energy, ionization energy and hydration heat of metals should be taken into account in the analysis of the causes of metal activity.
Metallic activity refers to the tendency of metallic elements to lose electrons in aqueous solutions to form metallic cations, which belongs to the category of thermodynamics. By using the activity of metals, we can compare the reducibility of metals in water and the oxidation of their corresponding cations, and predict the direction of a series of displacement reactions in water.
Because aluminum is more active in metals than copper, aluminum and copper ions undergo substitution reactions to form aluminium ions and copper.

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