Which of the following represents a double displacement reaction?

2H₂ + O₂ →2H₂O

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2Mg + O₂ → 2MgO

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AgNO₃ + NaCl → AgCl + NaNO₃

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H₂ + Cl₂ →2HCl

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Solution

The correct option is C
AgNO₃ + NaCl → AgCl + NaNO₃

A double displacement reaction implies a precipitation reaction. In a precipitation reaction two compounds react to form a precipitate. This product is insoluble or cannot be dissolved in water.The cations of the reactants have switched places. Both the reagents are soluble in water but only one of the products is soluble, this is the perfect example of a double displacement reaction. Among the four options the only double displacement reaction is:

$A g N O_{3}$ + $N a C l \to A g C l$ + $N a N O_{3}$

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Similar questions

A g N O_{3} + N a B r \to N a N O_{3} + A g B r

B a C l_{2} + H_{2} S O_{4} \to B a S O_{4} + 2 H C l

A g N O_{3} + N a C l \to A g C l + N a N O_{3}

N a O H + H C l \to N a C l + H_{2} O

C a C O_{3} \to C a O + C O_{2} ↑

2 A g N O_{3} + C u \to C u {(N O_{3})}_{2} + 2 A g ↓

2 S O_{2} + O_{2} \to 2 S O_{3} ↑

N a C l + A g N O_{3} \to A g C l ↓ + N a N O_{3}

1.	Column-A Types of chemical reaction		Column-B Chemical equation
(A)	Combination reaction	(i)	$Z n + H_{2} S O_{4} \to Z n S O_{4} + H_{2}$
(B)	Oxidation & reduction reaction	(ii)	$2 H_{2} O E l e c t r i c i t y ⟶ 2 H_{2} + O_{2}$
(C)	Decomposition reaction	(iii)	$C a O + C O_{2} \to C a C O_{3}$
(D)	Displacement reaction	(iv)	$H_{2} + C l_{2} \to 2 H C l$
(E)	Double Displacement reaction	(v)	$B a C l_{2} + N a_{2} S O_{4} \to B a S O_{4} ↓ + N a C l$

N_{2}, {C l}_{2}, {N H}_{3}, O_{2}

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