Redox 15 Q Test

What are the two oxidation states of nitrogen in NH₄NO₂?

• +3 and +5

• +3 and -5

• -3 and +3

• -3 and -3

Which metal is most easily oxidized?

• Ag

• Co

• Cu

• Mg

Based on Reference Table J, which two reactants react spontaneously?

• Mg(s) + ZnCl2(aq)

• Cu(s) + FeSO4(aq)

• Pb(s) + ZnCl2(aq

• Co(s) + NaCl(aq)

An electrochemical voltaic cell setup consists of two half-cells, an anode, a cathode, an external circuit, and a salt bridge. When a reaction occurs, ion migration takes place through the...

• anode

• cathode

• salt bridge

• voltmeter

In the reaction: 2H₂(g) + O₂(g) → 2H₂O(g), the oxidizing agent is:

• H2

• O₂

• H^-

• O^2-

What type of electrochemical cell is shown?

• Oxidation cell

• electrolytic cell

• reduction cell

• voltaic cell

Which part of the electroplating is represented by the fork?

• the anode which is negative electrode

• the cathode which is negative electrode

• the anode which is the positive electrode

• the cathode which is the positive electrode

Given the balanced ionic equation representing a reaction:

Cu(s) + 2Ag⁺(aq) → Cu²⁺(aq) + 2Ag(s)

During this reaction, electrons are transferred from:

• Cu(s) to Ag+(aq)

• Cu2+(aq) to Ag(s)

• Ag(s) to Cu2+(aq)

• Ag+(aq) to Cu(s)

Given the balanced equation representing a reaction:

4Al(s) + 3O₂(g) → 2Al₂O₃(s)

As the aluminum loses 12 moles of electrons, the oxygen...

• gains 4 moles of electrons

• gains 12 moles of electrons

• loses 4 moles of electrons

• loses 12 moles of electrons

What is the oxidation state for a Mn atom?

• 0

• +7

• +3

• +4