5.1 Redox: (Fe3+ to Fe2+)

What coefficient would Fe²⁺ have in the following reaction?

___ Al + ___ Fe²⁺ → ___ Al³⁺ + ___ Fe

• 1

• 2

• 3

• 6

Which are examples of reduction?

• I and II
• I and III
• II and III
• I, II and III

Tags

NGSS.HS-PS1-2

What happens to Cr³⁺ ion when it is converted to CrO₄^2–

• Oxidation number decreases and it undergo reduction
• Oxidation number decreases and it undergo oxidation
• Oxidation number increases and it undergo reduction
• Oxidation number increases and it undergo oxidation

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

What is oxidation number of Fe in FeO ?

• +2
• -2
• 0
• +1

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Cl₂ + 2e^- --> 2Cl ^- is an example of:

• a chemical reaction

• redox

• oxidation

• reduction

Substance that oxidizes another substance by accepting its electrons.

• reducing agent

• oxidation number

• combustion

• oxidizing agent

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Substance that reduces another substance by losing electrons.

• reducing agent

• half-reaction

• electronegative atom

• oxidizing agent

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Fe ---> Fe³⁺ + 3e^–

the species Fe is

• oxidized

• reduced

• neutralized.

• disproportionated.