REDOX Review 2

Match the following: oxygen with the oxidation state used in the substance.

• -1

• BaO₂

• 0

• O₂

• +2

• OF₂

• -2

• Na₂ClO₂

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

When 1 mole of Ni³⁺ changes to Ni²⁺, the Ni³⁺ undergoes

• oxidation by losing electrons

• oxidation by gaining electrons

• reduction by losing electrons

• reduction by gaining electrons

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

• decreases

• increases

• remains the same

In a chemical reaction, as a species is oxidized, its oxidation number

• decreases

• increases

• remains the same

Tags

NGSS.HS-PS1-2

• a reduction reaction, because there is a decrease in oxidation number

• a reduction reaction, because there is a increase in oxidation number

• an oxidation reaction, because there is a decrease in oxidation number

• an oxidation reaction, because there is a increase in oxidation number

• Zn

• Fe²⁺

• Zn²⁺

• Fe

Which reaction is an example of an oxidation-reduction reaction?

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Reorder the following: Al³⁺, Mg²⁺, Au³⁺, Ni²⁺

Place the ions in increasing order (least to greatest) of ability to gain electrons.

• Mg²⁺

• Au³⁺

• Al³⁺

• Ni²⁺

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

According to table J, which of these metals will react most readily with 1.0 M HCl to produce H₂(g)?

• Ca

• K

• Mg

• Zn

Tags

NGSS.HS-PS1-5