Question

What happens when a piece of iron metal is placed in copper sulfate solution? Name the type of reaction involved.

Answer 1

Hint: We have to know that during chemical reactions, the substances that respond are known as reactants while the substances that are produced during chemical reactions are known as products. There are six sorts of chemical reactions: combination reactions, decomposition reactions, displacement reactions, and combustion reactions.

Complete answer:
The reactivity arrangement of metals, otherwise called the activity series, alludes to the course of action of metals in the decreasing order of their reactivities. Metals will in general promptly lose electrons and form cations. The greater part of them responds with atmospheric oxygen to give metal oxides. Be that as it may, various metals have various reactivities towards oxygen (inert metals, for example, gold and platinum don't promptly form oxides when presented to air). The ions of low positioning metals are promptly decreased by high positioning metals on the reactivity arrangement. In this way, low positioning metals are effortlessly displaced by high positioning metals in the single displacement reactions between them.
When iron reacts with copper sulfate solution, the products formed are ferrous sulfate and metallic copper. This is because iron is more reactive than copper, so it displaces copper from the solution of copper sulfate. We can write the chemical reaction as,
$CuS{O_4}\left( {aq} \right) + Fe\left( s \right)\xrightarrow{{}}FeS{O_4}\left( {aq} \right) + Cu\left( s \right)$
We have to know that this type of reaction is a single displacement reaction.

Note:
We have to know that displacement reactions are of two types. They are single displacement reactions and double displacement reactions. In a single displacement reaction, an element which is more reactive gets displaced by an element which is less reactive. It is known as a substitution reaction. In a double displacement reaction, ions are exchanged between two reactants to produce a new compound. Metathesis reaction is another name for double displacement reaction.