Question

what is displacement reaction​

Answer 1

Defination :-

Displacement reaction is a reaction in which a more reactive elementary substance displaces and sets free a constituent element, which is less reactive, from a compound. but there is a single displacement reaction and double.

Example 1 :-

Single displacement: This is when one element trades places with another element in a compound. These reactions come in the general form of:

A + BC ---> AC + B

One example of a single displacement reaction is when magnesium replaces hydrogen in water to make magnesium hydroxide and hydrogen gas:

Mg + 2 H2O ---> Mg(OH)2 + H2 

Example 2 :-

Double displacement: This is when the anions and cations of two different molecules switch places, forming two entirely different compounds. These reactions are in the general form:

AB + CD ---> AD + CB

One example of a double displacement reaction is the reaction of lead (II) nitrate with potassium iodide to form lead (II) iodide and potassium nitrate:

Pb(NO3)2 + 2 KI ---> PbI2 + 2 KNO3

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Answer 2

Answer:

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