Oxidation and Reduction (LC 2027) (Leaving Cert Chemistry): Flashcards

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Definition of oxidation in terms of electrons

Loss of electrons

Definition of reduction in terms of electrons

Gain of electrons

OIL RIG mnemonic meaning

Oxidation Is Loss, Reduction Is Gain (of electrons)

Do oxidation and reduction occur together in reactions?

Yes, always occur simultaneously

What an oxidising agent does

Accepts electrons from other substances

What happens to oxidising agent in reaction

Gets reduced

What a reducing agent does

Donates electrons to other substances

What happens to reducing agent in reaction

Gets oxidised

In 2Mg+O2→2Mg2+O2−2Mg + O_2 \rightarrow 2Mg^{2+}O^{2-}, what happens to Mg

Loses two electrons (oxidised)

Reducing agent in Zn+Cu2+→Zn2++CuZn + Cu^{2+} \rightarrow Zn^{2+} + Cu

ZnZn

Oxidising agent in Zn+Cu2+→Zn2++CuZn + Cu^{2+} \rightarrow Zn^{2+} + Cu

Cu2+Cu^{2+}

Use of H2O2H_2O_2 as oxidising agent

Bleaching hair by breaking down pigment molecules

How vitamin C helps iron absorption

Converts Fe3+Fe^{3+} to Fe2+Fe^{2+} ions (acts as reducing agent)

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Oxidation and Reduction (LC 2027)

Oxidation and Reduction (LC 2027)

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Oxidation and Reduction (LC 2027)

Oxidation and Reduction (LC 2027)

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Oxidation and Reduction (LC 2027)

Oxidation and Reduction (LC 2027)

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Oxidation and Reduction (LC 2027)

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