91Ó°ÊÓ

Assign the oxidation numbers of all atoms in the following compounds. (a) \(\mathrm{ZrO}_{2}\) (b) \(\mathrm{FeO}\) (c) \(\mathrm{Ca}\left(\mathrm{NO}_{3}\right)_{2}\)

Assign the oxidation numbers of all atoms in the following species. (a) \(\mathrm{PF}_{5}\) (b) \(\mathrm{Na}_{2} \mathrm{CrO}_{4}\) (c) \(\mathrm{NO}_{2}^{-}\)

Assign the oxidation numbers of all atoms in the following species. (a) \(\mathrm{BaO}_{2}\) (b) \(\mathrm{F}_{2}\) (c) \(\mathrm{Sn}^{2+}\)

Assign the oxidation numbers of all atoms in the following species. (a) \(\mathrm{KMnO}_{4}\) (b) \(\mathrm{H}_{2} \mathrm{O}\) (c) \(\mathrm{Cl}_{2}\)

Assign the oxidation numbers of all atoms in the following species. (a) \(\mathrm{NO}_{2}\) (b) \(\mathrm{CrO}_{2}^{-}\) (c) \(\mathrm{Co}\left(\mathrm{NO}_{3}\right)_{3}\)

Assign the oxidation numbers of all atoms in the following species. (a) \(\mathrm{CaCO}_{3}\) (b) \(\mathrm{HBrO}_{4}\) (c) \(\mathrm{Fe}^{3+}\)

Assign the oxidation numbers of all atoms in the following compounds. (a) \(\mathrm{KHF}_{2}\) (b) \(\mathrm{H}_{2} \mathrm{Se}\) (c) \(\mathrm{NaO}_{2}\) (d) \(\mathrm{C}_{2} \mathrm{H}_{6}\)

Assign the oxidation numbers of all atoms in the following species. (a) \(\mathrm{NO}\) (b) \(\mathrm{BO}_{2}^{-}\) (c) \(\mathrm{Cr}\left(\mathrm{NO}_{3}\right)_{3}\) (d) \(\mathrm{CH}_{3} \mathrm{OH}\)

Balance the following reactions, and specify which species is oxidized and which is reduced. (a) \(\mathrm{Fe}_{2} \mathrm{O}_{3}+\mathrm{H}_{2} \rightarrow \mathrm{Fe}+\mathrm{H}_{2} \mathrm{O}\) (b) \(\mathrm{CuCl}_{2}+\mathrm{Na} \rightarrow \mathrm{NaCl}+\mathrm{Cu}\) (c) \(\mathrm{C}+\mathrm{O}_{2} \rightarrow \mathrm{CO}_{2}\)

Balance the following reactions, and specify which species is oxidized and which is reduced. (a) \(\mathrm{Na}+\mathrm{FeCl}_{3} \rightarrow \mathrm{Fe}+\mathrm{NaCl}\) (b) \(\mathrm{SnCl}_{2}+\mathrm{FeCl}_{3} \rightarrow \mathrm{SnCl}_{4}+\mathrm{FeCl}_{2}\) (c) \(\mathrm{CO}+\mathrm{Cr}_{2} \mathrm{O}_{3} \rightarrow \mathrm{Cr}+\mathrm{CO}_{2}\)