Question

choose combination, displacement and double displacement reaction out of the given reactions     1)MnO2+4HCl=MnCl2+Cl+2H2O
2)CaO+CO2=CaCO3   3)2AgCl=2Ag+Cl​

Answer 1

Answer:

1 double displacement reaction

2 combination reaction

3 decomposition reaction

Explanation:

Answer 2

Answer:

MnO₂ + 4HCl → MnCl₂ + Cl + 2H₂O: Double displacement reaction

CaO+CO₂ → CaCO₃: Combination reaction

2AgCl → 2Ag + Cl​: Decomposition reaction

Explanation:

Combination Reaction: The chemical reaction in which two or more reactants (elements or compounds) are combined to form a single new product is called a combination reaction.

Displacement Reaction: The chemical reactions in which an element displaces the other element from a compound are called displacement reactions.

Double Displacement reaction: The chemical reaction in which two compounds react together and form two new compounds by exchanging one of their ions is called a double displacement reaction.

(1) MnO₂ + 4HCl → MnCl₂ + Cl + 2H₂O

Double displacement reaction

(2) CaO+CO₂ → CaCO₃

Combination reaction

(3) 2AgCl → 2Ag + Cl​

Decomposition reaction

Hence, MnO₂ + 4HCl → MnCl₂ + Cl + 2H₂O is a Double displacement reaction, CaO+CO₂ → CaCO₃ is a Combination reaction and 2AgCl → 2Ag + Cl​ is a Decomposition reaction.

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