Question

Identify the types of chemical reaction
a) Mg+Cl2---------- MgCl2
b) HgO--------Hg+O2
c)Na+S----->NaS
d)TiCl4+Mg------->Ti+MgCl2​

Answer 1

Answer:

1. Combination reaction :- It is so because two elements has combined to form a new product.

Mg + Cl2 ----> MgCl2

Magnesium has combined with chlorine to form Magnesium Chloride.

2. Decomposition reaction :- It is so because one element has broken down into two simple substances.

HgO ----> Hg + O

Here , Mercuricoxide has broken down into Merury and oxygen gas.

3 Comibation reaction :- It is so because two elements has combined to form a single product.

Na + S ----> Nas

Here , Sodium has combined with sulphur to form sodium sulphate.

4. Displacement reaction :- It is so because, here the higher reactive metal, displaces the less reactive metal from its compound and form a new compound of it.

TiCl2 + Mg ----> Ti + MgCl2

Here , Magnesium displaces Tim from tin Chloride and forms Magnesium Chloride+ Tin because magnesium is more reactive than tin and hence , is able to displace it.

Know more :-

While doing any type of reaction , it is necessary to balance them according to the law of conservation of mass.

Law of conservation of mass says that there are equal number of atoms on both reactant and Product side.

Explanation: