Question

You are given the following chemical equation
Mg (s) + CuO (s) → MgO (s) + Cu (s)
This equation represents
(a) decomposition reaction as well as displacement reaction
(b) combination reaction as well as double displacement reaction
(c) redox reaction as well as displacement reaction
(d) double displacement reaction as well as redox reaction

Answer 1

Answer:

Mg (s) + CuO (s) → MgO (s) + Cu (s)

This equation represents

double displacement reaction as well as redox reaction.

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Answer 2

Answer:

The correct option is (c) Redox reaction as well as displacement reaction.

Explanation:

A more reactive element can remove a less reactive metal from its salt or compound in a displacement reaction.

$AB+C$ → $BC+A$

We can see that $C$ has displaced $A$ from its compound $AB$. We can also say that $C$ has reduced $A$ and oxidized itself. This is called a redox reaction.

$Mg(s) + CuO(s)$ → $MgO(s) +Cu(s)$

Magnesium has displaced copper from its oxide. Magnesium acts as a reducing agent and has reduced copper oxide to copper. Magnesium has in turn oxidized itself.