6. Chemical Quantities & Aqueous Reactions

Which of the following equations represents a redox reaction (a reaction in which oxidation numbers change)?

Which of the following represents a process in which a species is reduced?

Which of the following reactions is NOT an example of an oxidation–reduction (redox) reaction?

In redox reactions, what is the process called when a substance loses electrons and gains oxygen?

In a redox reaction, when oxygen acts as the electron acceptor, which compound is commonly produced as a byproduct?

Which of the following occurs as a result of an oxidation-reduction (redox) reaction?

Determine the standard cell potential, E^ext{°}_{ext{cell}}, for the reaction: Al(s) + 3 Ag^+(aq) → 3 Ag(s) + Al^{3+}(aq). Given: E^ext{°}_{ext{Al}^{3+}/ext{Al}} = -1.66 ext{ V}, E^ext{°}_{ext{Ag}^+/ext{Ag}} = +0.80 ext{ V}.

In the context of redox reactions, which molecule accepts electrons at the end of the electron transport chain to form water?

In the redox reaction Cr2O7^{2-}(aq) + Cu^+(aq) → Cr^{3+}(aq) + Cu^{2+}(aq), which species is oxidized?

Which of the following reactions is a redox reaction?

In redox reactions, oxidation is best defined as which process, and reduction is best defined as which process?

Which of the following equations represents an oxidation-reduction (redox) reaction?

In which of the following reactions does the oxidation number of oxygen increase?

In the context of redox reactions, which term best describes a reduction process?

In the reaction 2Al(s) + 3Br2(g) → 2AlBr3(s), which element is oxidized and which is reduced?