6. Chemical Quantities & Aqueous Reactions

What is the effective nuclear charge (Z_{eff}) experienced by a valence electron in an oxygen atom?

What is the oxidation number of Mg in MgO?

In which of the following compounds does oxygen have an oxidation number other than -2?

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

What is the oxidation state of an individual nitrogen atom in NH4OH?

Which of the following compounds contains nitrogen with an oxidation number of +5?

Given the following species: MnO4^-, Cl2, Fe^3+, and H2O2, which is the strongest oxidizing agent?

What is the oxidation number of phosphorus in LiH2PO4?

Which of the following half-reactions correctly represents an oxidation process?

Which of the following is the correct method to calculate the percent ionization of HA in a 0.10 M solution, given that the acid dissociation constant (K_a) is known?

In the compound CH3COOH (acetic acid), what are the oxidation states of the carbon atoms labeled as (i) in the methyl group (CH3-) and (ii) in the carboxyl group (-COOH)?

What is the oxidation state of an individual nitrogen atom in HNO_3?

When an atom is oxidized, what change occurs to its oxidation number?

What is the oxidation state of each element in coh2?

What is the oxidation number of sodium (Na) in its compounds?