I would like to know if the following statement is true or false.

Question

The following reaction is a redox reaction.

2H3O+ (aq) + Cu (s) + 2HNO3 (aq) ==> Cu2+ (aq) + 2NO2 (g) + 4H2O (l)

Answer 1

Here is my response from a previous question of yours. Regarding this question, because electrons are transferred from the Cu(s), changing its oxidation state to +2, this is a redox reaction, unlike in the problem below. Let me know in the comments below if you need any clarification.

"True or False. Is the reaction a Redox reaction.

Al2O3 (aq) + 6NaOH (aq) ==> 2Al(OH)3 (s) + 3Na2O (aq)

False. In a redox reaction, electrons are transferred between species, causing 2 or more chemical species to have different charges. For example, consider the reaction:

2 Mg(s) + O2(g) => 2 MgO(s)

In the equation, Mg is neutral on the reactant side but loses, or TRANSFERS, electrons to become Mg+2. The same goes for Oxygen. On the reaction side, each element of oxygen is neutral before it gains the electrons from the Mg; on the reactant side, it has a charge of -2.