Study the reaction. Mg+S→MgS Assuming a common ion for Mg is Mg2+ and a common ion for S is S2-, how were electrons exchanged in this reaction? Mg and S each share an electron with the other atom. There is no electron transfer between Mg and S atoms. Each Mg atom loses two electrons and each S atom gains two electrons. Each Mg atom gains two electrons and each S atom loses two electrons. What is a redox reaction? a chemical reaction in which the forward reaction is oxidation and the reverse reaction is reduction a chemical reaction in which all reactants undergo oxidation only or all reactants undergo reduction only a chemical reaction in which all reactants undergo oxidation and then undergo reduction a chemical reaction in which some reactants undergo oxidation and some reactants undergo reduction What is the role of electrons in redox reactions? One of the reactants in a redox reaction loses electrons and is oxidized. The other gains electrons and is hybridized. One of the reactants in a redox reaction loses electrons and is reduced. The other gains electrons and is oxidized. One of the reactants in a redox reaction loses electrons and is hybridized. The other gains electrons and is oxidized. One of the reactants in a redox reaction loses electrons and is oxidized. The other gains electrons and is reduced. Study the reaction. 2Na+Cl2→2NaCl Which is true based on this reaction? Na is a reducing agent because Na loses electrons and is oxidized to Na+. Cl2 is a reducing agent because Cl2 loses electrons and is oxidized to Cl–. Na is reduced to Na+ because Na gains electrons and electrons are gained in reduction reactions. Cl2 is oxidized to Cl– because Cl2 loses electrons and electrons are lost in oxidation reactions. Which is an application of an electrochemical cell? microphones transformers thermometers batteries Examine the reaction. 2Al (s)+3Ni2+ (aq)→2Al3+ (aq)+3Ni (s) What can be deduced from this reaction? Select two that apply. Aluminum is more chemically active than nickel. Nickel is more chemically active than aluminum. Aluminum is oxidized. Nickel is oxidized. According to the table, which reaction is correct? Fe (s)+Mg2+ (aq)→Fe2+ (aq)+Mg (s) because magnesium (Mg) is a stronger oxidizing agent than iron (Fe) Ag (s)+Li+ (aq)→Ag+ (aq)+Li (s) because lithium (Li) is a stronger oxidizing agent than silver (Ag) Zn (s)+Cu2+ (aq)→ Zn2+ (aq)+Cu (s) because copper (Cu) is a stronger oxidizing agent than zinc (Zn) Pb (s)+2Li+ (aq)→2Li (s)+Pb2+ (aq) because lithium (Li) is a stronger oxidizing agent than lead (Pb)