what is chemical reaction ? Explain about various types chemical reactions with chemical equation ?
Answers
Answer:
the types of chemical reaction :
representation of four basic chemical reaction types of synthesizers decomposition single replacement and double replacement
Answer:
a process that involves rearrangement of the molecular or ionic structure of a substance, as distinct from a change in physical form or a nuclear reaction.
1. Combination Reaction
A reaction in which two or more reactants combine to form a single product is known as a combination reaction.
It takes the form of X + Y → XY
Example of combination reaction: 2Na + Cl2 → 2NaCl
2. Decomposition Reaction
A reaction in which a single compound breaks into two or more simpler compounds is known as a decomposition reaction.
A decomposition reaction is just the opposite of combination reaction.
Example of a decomposition reaction: CaCO3 → CaO + CO2
3. Displacement Reaction
A chemical reaction in which a more reactive element displaces a less reactive element from its aqueous salt solution.
It is also called a substitution reaction
Example of displacement reaction: Zn + CuSO4 → ZnSO4 + Cu
4. Double Displacement Reaction
A chemical reaction in which ions gets exchanged between two reactants which form a new compound is called a double displacement reaction.
It takes the form of XY + ZA → XZ + YA
It is also called a metathesis reaction
Example : BBaCl2 + Na2SO4 → BaSO4 + 2NaCl
5. Precipitation Reaction
A chemical reaction that involves the formation of an insoluble product (precipitate; solid) is called Precipitation reaction.
A precipitation reaction occurs when a solution, originally containing dissolved species, produces a solid, which generally is denser and falls to the bottom of the reaction vessel.
NaCl(s) → Na+(aq) + Cl−(aq)
AgNO3(s) → Ag+(aq) + NO3−(aq)