Redox Remediation (2023)

What are the oxidation numbers in this compound?

H₂O₂

• H = -1 and O = -2

• H = +2 and O = -2

• H = +1 and O = -1

• H = +1 and O = -2

What is the oxidation number for phosphorus in this compound?

H₃PO₄

• +6

• 0

• -1

• +5

• K

• Both K and Br₂

• Neither K nor Br₂

• Mg

• Both F₂ and Mg

• Neither F₂ nor Mg

In redox reactions, ...

• the oxidizing agent is the substance oxidized

• the reducing agent is the substance reduced

• the oxidizing agent is the substance reduced

What are the oxidation numbers in the compound KCl?

• K = -1 and Cl = +1

• K = 0 and Cl = 0

• K = +1 and Cl = -1

• K = +2 and Cl = -2

What is the most common oxidation number for oxygen?

• 0

• +1

• -2

• -1

In oxidation, atoms or ions ...

• increase their oxidation number

• decrease their oxidation number

• have a zero oxidation number after the reaction

• do not change their oxidation numbers

Regardless of the process, how does the total number of reactant atoms compare with the total number of product atoms?

• reactant atoms are always greater in number

• no relationship exists between the 2 numbers

• the 2 numbers are always equal

• product atoms are always greater in number