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Match the following reactions to their types.

1.CuCl_2\rightarrow Cu+Cl_2

p.Metal Displacement Reaction

2.3Al_{(s)}+3CuSO_{(aq)}\rightarrow 3Cu_{(s)}+Al_2(SO_4)_3

q.disproportionate reaction

3.2K+Cl_2\rightarrow 2KCl

r.Combination reaction

4.3CrO_4^{3-}+8H^+\rightarrow 2CrO_4^{2-}+Cr^{3+}+4H_2O

s.decomposition reaction

Option: 1

1-s,2-p,3-r,4-q


Option: 2

1-s,2-r,3-p,4-q


Option: 3

1-r,2-s,3-p,4-q


Option: 4

1-s,2-r,3-q,4-p


Answers (1)

best_answer

Decomposition Reaction
This is the reaction that involves the breakdown of a compound into different compounds.

CuCl_2\rightarrow Cu+Cl_2

Combination Reaction
These types of reactions are the opposite of decomposition reactions and hence involve the combination of two species to form a single compound.

2K+Cl_2\rightarrow 2KCl

Disproportionation Reactions

Disproportionation reactions are those reactions in which a single element in one oxidation state is simultaneously oxidized and reduced.

3CrO_4^{3-}+8H^+\rightarrow 2CrO_4^{2-}+Cr^{3+}+4H_2O

Metal Displacement: A metal in a compound can be displaced by another metal in an uncombined state. Metal displacement reactions find many applications in metallurgical processes in which pure metals are obtained from their compounds in ores. 

2Al_{(s)}+3CuSO_{4(aq)}\rightarrow 3Cu_{(s)}+Al_2(SO_4)_3 

So, Correct Match : 1-s, 2-p, 3-r, 4-q

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Nehul

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