Two aqueous solutions are mixed and a precipitate is formed. What type of reaction is it?

Decomposition

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Synthesis

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Combustion

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Double displacement

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Solution

The correct option is D Double displacement
When two aqueous solutions react with each other and produce a precipitate is called a double decomposition reaction.
Example:
$M g C l_{2} (a q) + 2 K O H_{(a q)} \to M g (O H)_{2} + 2 K C l_{(s a l t)}$

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Two aqueous solutions are mixed and a precipitate is formed. What type of reaction is it?

The correct option is D Double displacementWhen two aqueous solutions react with each other and produce a precipitate is called a double decomposition reaction.Example:MgCl2(aq)+2KOH(aq)→Mg(OH)2+2KCl(salt)

The correct option is D Double displacement
When two aqueous solutions react with each other and produce a precipitate is called a double decomposition reaction.
Example:
$M g C l_{2} (a q) + 2 K O H_{(a q)} \to M g (O H)_{2} + 2 K C l_{(s a l t)}$