Redox reactions

Redox reactions

By Daulet Toleuzhanov

Oxidation and Reduction processes

Oxidation

Oxidation is the process in which substance loses electrons.

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For example:

Ca⁰ - 2e → Ca²⁺​

Oxidation and Reduction processes

Reduction

Reduction is the process in which substance gains electrons.

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For example:

S⁰ + 2e → S^2-​

Gain electrons - reduction

GER

Lose electrons - oxidation

LEO

Oxidation and Reduction processes

Multiple Choice

Which one of the followings is oxidation process?

• N²⁺ - 3e → N⁵⁺

• S⁶⁺ + 2e → S⁴⁺

• Cl³⁺ + 4e → Cl^-

• P⁵⁺ + 8e → P^3-

What are the redox reactions?

Redox reactions primarily involve the transfer of electrons between two chemical species.

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​In redox reactions, oxidation and reduction processes take place simultaneously.

Multiple Choice

Which one the followings is redox reaction?

• SO₃ + H₂O → H₂SO₄

• 2NaOH + H₂SO₄ → Na₂SO₄ + 2H₂O

• Fe₂O₃ + 2Al → Al₂O₃ + 2Fe

Multiple Choice

Which one of the followings is not the way of determining redox reactions?

• There is transfer of electrons

• Change of oxidation state

• Difference states of matter for compounds