To watch the action of Zn, Fe, Cu and also Al metals on the following salt solutions:

ZnSO4 (aq)FeSO4 (aq)CuSO4 (aq)Al2(SO4)3 (aq)

Arrange Zn, Fe, Cu and also Al metals in the decreasing order of reactivity based on the above results.

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The Theory

Metals are elements and are good conductors the heat and electricity. Most steels are electropositive in nature and the steel atoms shed electrons in chemistry reactions to type cations. The more reactive a metal, the greater propensity it has actually to type a optimistic ion in a chemical reaction.

For example:


How are steels arranged in a periodic table?

Metals occupy the bulk of the periodic table. The alkali metals are a collection of chemical facets in the regular table. Alkali metals make up group 1 in the periodic table along with hydrogen. Alkali steels are lithium (Li), sodium (Na), potassium (K), rubidium (Rb), caesium (Cs) and francium (Fr). The team 2 aspects in the regular table are dubbed alkaline planet metals. Alkaline planet metals space beryllium (Be), magnesium (Mg) calcium (Ca), strontium (Sr), barium (Ba) and also radium (Ra). Group1 and also group 2 facets are together referred to as s-block elements. Aspects of group 3 come 12 are shift elements. this are likewise metallic in nature and also are called transition metals. They are also called d-block elements. Non-metallic aspects occupy the appropriate side the the regular table. A diagonal heat from boron to polonium separates steels from non-metals.


Now, let’s discover the nature of metals…

Physical nature of metals:

Good conductors the heat and also electricity: In metals, the hopeful ions are surrounded through a sea that electrons and these room responsible for their conductivity.High melting point and cook point.They room malleable and ductile, for this reason they have the right to be bent and stretched there is no breaking.In most metals, the atoms are highly close packed, so they have actually high density.They have a shining appearance.Metals exist in hard state at room temperature other than for mercury, which is in a liquid state in ~ room temperature.

Chemical properties of metals:

A much more reactive steel readily reaction with various other elements. The most reactive metals will react also water, if the the very least reactive metals will not react even with acid.

Example: If we put a tiny piece the sodium metal in water, sodium reacts exothermically v water producing hydrogen and metal hydroxide.


Metals react v oxygen in the air to kind oxides.



Some metals react with acid and also replace hydrogen indigenous the acid.


Single displacement reactions:

A single displacement reaction is an important type of chemical reaction. That is also called substitution reaction. In these reactions, a complimentary element displaces an additional element native its compound, developing a new compound. The reaction is normally written as:


Single displacement reactions space all oxidation-reduction reactions. Because that example,


Definition of Displacement reaction: The chemical reaction through which one facet takes the place or location of one more element in a compound.

Displacement reaction are really common in metals. They have the right to be offered to uncover out the relative reactivities the metals. In a displacement reaction, a an ext reactive metal deserve to displace a much less reactive metal from that is salt solution. The reaction is often known as metal displacement reaction.

Some that the typically used metals have actually been i ordered it in the decreasing order of reactivity. This is recognized as the reactivity series or task series. The activity collection of steels is critical concept in chemistry. The activity collection of steels is vital tool for predicting the products of displacement reactions and the reactivity of metals in other reactions. Potassium is the most reactive metal, if platinum is the least reactive.


The greater the metal in the series, the an ext reactive the is and also the an ext vigorously the reacts with water, oxygen and also acid. A steel in the activity series can displace any type of metal below it in the series from that is compound. The aspects potassium, sodium, lithium and also calcium are an extremely reactive and they react v cold water to create hydroxides and hydrogen gas. The aspects magnesium, aluminium and iron are also considered as active metals and they react with steam to develop oxides and hydrogen gas. The metals above hydrogen are more reactive than hydrogen. This metals can displace hydrogen from mountain or water and liberate hydrogen gas. The metals copper, silver gold and also platinum are much less reactive than hydrogen and they perform not change hydrogen from water or acid.

Examples because that metal-displacement reactions:

Zinc deserve to displace copper native copper sulphate solution and iron from ferrous sulphate solution. For this reason zinc is much more reactive than iron and copper.


If a item of zinc steel is included to aluminium sulphate solution, no reaction bring away place. For this reason aluminium is more reactive 보다 zinc.

If little pieces that copper are added into services of zinc sulphate, aluminium sulphate and ferrous sulphate, no reactions take it place. So, copper is less reactive than zinc, aluminium and also iron.Aluminium deserve to displace Zn native zinc sulphate solution, Cu from copper sulphate solution and Fe indigenous ferroussulphate solution.



Iron displaces Cu from copper sulphate solution, but it does not displace Al and also Zn from your salt solutions.


Not only steels but likewise non-metals can take part in displacement reactions.

For example, chlorine gas displaces bromine native potassium bromide solution. The systems of potassium bromide repurchase a yellowish and orange color of the liberated bromine gas.

See more: Calories In A Cup Of Vegetable Oil And Nutrition Facts, Vegetable Oils Calories


Learning OutcomesStudents know the terms prefer metals, metal displacement reaction, reactivity series, etc.Students acquire an abilities to carry out & visualize the reactions of Al, Zn, Fe and Cu with the complying with salt solutionsAluminium sulphateZinc sulphateFerrous sulphateCopper sulphateStudents deserve to analyze the meaning of reactivity series of metals based on the inferences native the experiment.Students acquire an abilities to do an experiment to identify the reactivity of metals in salt solutions.