Question

Zn + Cuso4=?

Completethe above reaction ​

Answer 1

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

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

Know More :-

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.

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

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

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

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

Answer 2

Zn + CuSO4 → ZnSO4 + Cu

Explanation:

On adding zinc to CuSO4 solution, zinc displaces copper from copper sulphate solution & forms zinc sulphate solution

Because zinc is more reactive metal which displaces less reactive metal from its solution.

This is indicated by a colour change from blue to colourless.

CuSO4 solution has a blue colour while ZnSO4 solution is colourless.