Question

state the type of chemical reactions, represented by the following equations:PQ+ RS gives PS+ RQ​

Answer 1

Answer:

Double Displacement reaction

Explanation:

A double displacement reaction is a type of chemical reaction where two compounds react, and the positive ions (cation) and the negative ions (anion) of the two reactants switch places, forming two new compounds or products. For example,

Na2S+2HCl→2NaCl+H2S

Answer 2

ANSWER :-

PQ + RS reacts to give PS + RQ , it is a Double displacement reaction as exchange of ions took place.

EXPLANATION :-

WHAT IS CHEMICAL REACTION?

The process in which a new substance is formed due rearrangement of atoms called Chemical Reaction.

E.g. Reaction of water and potassium.

What is chemical equation?

The representation of a chemical reaction through numericals,symbols and formula is called chemical equation.

The chemical equation is the short hand representation of a chemical reaction.

#some useful informations

Symbols are short hand representation of a element.
Formula is short hand representation of a compond.

Reactants are initial position of element whereas product is by product formed after the reaction.

TYPES OF REACTIONS :-

1. COMBINATION REACTION

It is a reaction in which two or more substances react with each other to form a new substance.

E.g. Carbon react with oxygen to form carbondioxide.

$C(g)+{O}_{2}(g) \rightarrow C{O}_{2}(g)$

2. DECOMPOSITION REACTION

It is a reaction in which a single substance get divided into two or more substances.

E.g. water divided into oxygen and hydrogen.

$2{H}_{2}O (l) \rightarrow 2{H}_2 (g)+ {O}_{2} (g)$

3.DISPLACEMENT REACTION

It is a reaction in which a highly reactive substance displace a low reactive substance from its solution.

E.g. Iron displace copper from copper sulphate to form iron sulphate and copper.

$CuS{O}_{4}(aq) + Fe(s) \rightarrow FeS{O}_{4} (aq) + Cu(s)$

4.DOUBLE-DISPLACEMENT REACTION

It is a reaction in which there is inter change between ions of two substances.

.e.g.barium chloride react with sodium sulphate to form barium sulphate and sodium chloride.

$Ba{Cl}_{2} (aq)+ {Na}_{2}{SO}_{4} (aq) \rightarrow BaS{O}_{4}(aq)+NaCl(aq)$

5.OXIDATION REDUCTION REACTION

It is also known as REDOX reaction.

When Oxygen is added or hydrogen is removed from a substance it is called Oxidation but removal of oxygen and addition of hydrogen is called reduction.

e.g. chlorine get reduced when react with hydrogen to form hydrochloric acid.

${H}_{2} (g)+ Cl (g) \rightarrow HCl (l)$