6. Chemical Quantities & Aqueous Reactions

What is the oxidation state of each individual carbon atom in the oxalate ion, C2O4^{2-}?

What is the oxidation number of nitrogen in the compound NH3?

In the reaction 2Fe2O3 + 3C → 4Fe + 3CO2, what is being oxidized?

Which choice correctly identifies the oxidation number (o.n.) of sulfur in the compound Na2SO4?

In the redox reaction Fe + CuSO_4 → FeSO_4 + Cu, assign the correct oxidation number to iron (Fe) in FeSO_4.

Which of the following elements is most likely to have an oxidation number of +2 in its compounds?

What is the oxidation state of an individual bromine atom in NaBrO_3?

Which of the following is the most common oxidation number for group 15 elements in their compounds?

Given a solution containing 2.00 × 10^{-3} M Ca^{2+} and 3.00 × 10^{-2} M SO_4^{2-}, what is the value of the charge (q) carried by the ions in 1.00 L of this solution? (Use the elementary charge e = 1.602 × 10^{-19} C.)

Which of the following statements is associated with oxidation?

Which of the following is an oxidation half-reaction?

In carbon monoxide (CO), what is the oxidation number of the oxygen atom?

What is the typical oxidation state of hydrogen in most of its compounds?

What is the oxidation number of chlorine in the compound NaClO\(_3\)?

What is the oxidation number of each vanadium atom in V2O5?