Question

what happen when a piece of zinc metal is added to CuSo4 write balanced chemical for the above reaction​

Answer 1

Answer :

- When we add a piece of Zinc (Zn) metal in Copper Sulphate Solution (CuSO4) then the Zinc will Replace Copper (Cu) from its Sulphate and form Zinc Sulphate (ZnSO4) .

Such reaction are known as Displacement Reaction

$\underline{\mathsf{Chemical\: Reaction}}$

$\boxed{\mathsf{\underbrace{{Zn}_{(s)}}_{Zinc} + \underbrace{{CuS{O}_{4}}_{(aq)}}_{Copper\: Sulphate} \longrightarrow \: \underbrace{{ZnS{O}_{4}}_{(aq)}}_{Zinc\: Sulphate} + \underbrace{{Cu}_{(s)}}_{Copper}}}$

$\rule{300}{1}$

Displacement Reaction

Reaction in which one substance displace the other less reactivity substance from its compound or is known as Displacement Reaction.

(In the above reaction this reaction is also known as Substitution reaction)

Reactivity

Reactivity of a substance refers to the tendency of an element to react with itself or with any other elements.

Generally lower the valency of the metal higher it's Reactivity .

$\mathsf{\underline{Reactivity\: Series}}$

Reactivity series refers to the order of metals from highest to lowest reactivity.

$\longrightarrow \mathsf{Reactivity\: series \: of \: common \: metals}$

$\sf{Highest\: \:\: \:} \begin{cases} \underline{ \: \: \: \: \sf{Element \: \: \: \: }} & \underline{ \sf{ \:Symbol}} \: \\ \sf{ \star \: Potassium} & K \\ \sf{ \star \: Sodium} & Na \\ \sf{ \star \: Magnesium} & Mg \\ \sf{ \star \: Aluminium} & Al\end{cases}$

$\sf{Moderate\:} \begin{cases} \sf{ \star \: Zinc} & \: \: \: \: \: \: \: \: \: \: \:Zn \\ \sf{ \star \: Iron} &\: \: \: \: \: \: \: \: \: \: \: Fe \\ \sf{ \star \: Tin} & \: \: \: \: \: \: \: \: \: \: \: Sn \\ \sf{ \star \: Lead} & \: \: \: \: \: \: \: \: \: \: \: Pb\end{cases}$

$\sf{\: \:Lowest \: \: \: \:} \begin{cases} \sf{ \star \: Copper} & \: \: \: \:Cu \\ \sf{ \star \: Mercury} &\: \: \: \: Hg \\ \sf{ \star \: Silver} & \: \: \: \:Ag \\ \sf{ \star \: Gold} & \: \: \: \: Au\end{cases}$