Oxidation and Reduction

Which of these equations represents a redox reaction?

• Ca(HCO₃)_{2 -->} CaCO₃ + H₂O + CO₂

• CH₃COOH + NaOH --> CH₃COONa + H₂O

• Zn + 2FeCl₃ --> ZnCl₂ + 2FeCl₂

• NaCl + AgNO_{3 -->} AgCl + NaNO₃

Tags

NGSS.HS-PS1-7

The change of I^‾ to I₂ is ________________

• oxidation

• reduction

• neutralization

• Decomposition

• Combustion

Tags

NGSS.HS-PS1-2

The below reaction is an example of _________reaction.

F₂ → 2 F^- + 2 e^-

• Oxidation

• Reduction

• Neutralization

• decomposition

• combustion

What is the oxidation number of chlorine in ClO₃^- ?

• -1

• +1

• -1

• +5

What are the oxidation numbers of manganese in the manganese compounds shown below?

• A

• B

• C

• D

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Substances that lose electrons easily and are oxidized in a chemical reaction are ____________.

• reducing agents

• coloring agents

• oxidizing agents

• neutralizing agents

• analytical agents

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

A camera film is covered with silver ions that darkens upon exposure to light. The reaction that

takes place is: Ag ⁺ + e^‾ → Ag. In this reaction, silver ion acts as ____________

• reducing agent.

• dissolving agent.

• analytical agent.

• oxidizing agent

During the process of reduction, _________________

• protons are lost.

• protons are gained.

• electrons are lost.

• electrons are gained

• neutrons are lost.

Tags

NGSS.HS-PS1-2

NGSS.HS-PS1-7

What is the oxidation number of Nitrogen in HNO₃

• -7

• -5

• +5

• +7

• +2

Determine the oxidation number of the selected element in each ion/ compound.

• +8, -6, +5

• +2, +8, +6

• +4, +6, +5

• -4, -6, -5

• -4, -8, -6