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Double Displacement Reaction

Observe the r...

Question

Observe the reaction:

$C a C O_{3 (s)} + 2 N a O H_{(a q)} \to N a_{2} C O_{3 (a q)} + C a (O H)_{2 (a q)}$

Which of the following is a type of above reaction?

A

Displacement reaction

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B

Double displacement reaction

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C

Combination reaction

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D

Decomposition reaction

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Solution

The correct option is C Double displacement reaction
The given reaction is a double displacement reaction because there is an exchange of ions between the two reactants. $C a^{2 +}$ from $C a C O_{3}$ is getting exchanged with $N a^{+}$ from $N a O H$ to form two new products.

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Similar questions

K_{2} C O_{3} (a q) + C a (O H)_{2} (a q) \to C a C O_{3} (s) + 2 K O H (a q)

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K_{2} C O_{3} (a q) + C a {(O H)}_{2} (a q) \to {CaCO}_{3} ⏐ ↓ (s) + 2 KOH (aq)

The above reaction is an example of ______ reaction and the precipitate formed in this reaction is ______ .

K_{2} C O_{3} (a q) + C a (O H)_{2} (a q) \to C a C O_{3} (s) + 2 K O H (a q)

The above reaction is an example of reaction and the precipitate formed in this reaction is .

Q. Sample of four metals

A, B, C

D

were taken and added to the following solution one by one. The results obtained have been tabulated as follows :

Metal	Iron $(I I)$ Sulphate	Copper $(I I)$ Sulphate	Zinc Sulphate	Silver Nitrate
A	No reaction	Displacement
B			Displacement
C	No reaction	No reaction	No reaction	Displacement
D				No reaction

Use the table above to answer the questions about metal

A, B, C

D

.
What would you observe when

B

is added to a solution of Copper

(I I)

Q. Sample of four metals

A, B, C

D

were taken and added to the following solution one by one. The results obtained have been tabulated as follows :

Metal	Iron $(I I)$ Sulphate	Copper $(I I)$ Sulphate	Zinc Sulphate	Silver Nitrate
A	No reaction	Displacement
B			Displacement
C	No reaction	No reaction	No reaction	Displacement
D				No reaction

Use the table above to answer the questions about metal

A, B, C

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Which is the most reactive metal?

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