6. Chemical Quantities & Aqueous Reactions

In the compound NH3, what must nitrogen's oxidation state be?

In which one of the following molecules does sulfur have the smallest oxidation number?

Given the complex ion [Fe(CN)_6]^{4-}, what is the oxidation number of iron (Fe) in the complex?

What is the oxidation state of phosphorus (P) in the ion PO_3^{3-}?

What is the oxidation state of an individual sulfur atom in BaSO_4?

What is the oxidation number of oxygen in most compounds?

In an oxidation-reduction (redox) reaction, what does an atom gain or lose to change its oxidation number?

In which of the following compounds does nitrogen have an oxidation number of -3?

What is the oxidation state of chromium in K2Cr2O7?

What is the oxidation number of sulfur (S) in the compound Na2SO4?

What is the oxidation state of chromium (Cr) in K2Cr2O7?

What is the bond order of the phosphorus-oxygen (P–O) bond in the phosphate ion, PO_4^{3-}?

What is the oxidation state of sulfur in the ion SO_4^{2-}?

Which of the following statements is false when referring to the oxidation state of carbon?

What is the sum of the oxidation numbers of all atoms in a neutral molecule of magnesium sulfate (MgSO_4)?