Displacement reactions (Edexcel GCSE Chemistry Combined Science): Flashcards

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Displacement reactions
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What do displacement reactions compare?

Reactivity of metals

Alternative name for displacement reactions

REDOX reactions

Which element displaces which in a compound?

More reactive displaces less reactive

Definition of oxidation

Loss of electrons

Definition of reduction

Gain of electrons

Which metal is oxidised in displacement?

The more reactive metal

Which metal is reduced in displacement?

The less reactive metal

Products of Zn+CuSO4Zn + CuSO_4

ZnSO4+CuZnSO_4 + Cu

What happens to Zn in Zn+CuSO4Zn + CuSO_4 reaction?

Oxidised (loses electrons) to form Zn2+Zn^{2+}

What happens to Cu2+Cu^{2+} in Zn+CuSO4Zn + CuSO_4 reaction?

Reduced (gains electrons) to form Cu metal

Colour of copper metal formed in displacement

Reddish-brown solid

Less reactive metal + more reactive metal's salt = ?

No reaction

Which metals displace others in reactivity series?

Metals at top displace those below

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