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Predict whether the following double-replacement reaction will produce a precipitate: MgCl2 + Li2CO3 MgCO3 + 2 LiCl.
No; all products are soluble
Yes; the MgCO3 will precipitate
Yes; the LiCl will precipitate
Yes; both the MgCO3 and the LiCl will precipitate

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MissPhiladelphia
I think the correct answer from the choices listed above is the second option. This is a double displacement reaction. Both of the reactants are soluble, but when they are combined for a reaction, magnesium carbonate will form a precipitate. Hope this answers the question.

Answer: Option (b) is the correct answer.

Explanation:

A solid that is insoluble in an aqueous solution is known as a precipitate. Also, a chemical reaction in which a precipitate is formed is known as a precipitation reaction.

For example, [tex]MgCl_{2}(aq) + Li_{2}CO_{3}(aq) \rightarrow MgCO_{3}(s) + 2LiCl(aq)[/tex]

Hence, here [tex]MgCO_{3}[/tex] is the precipitate as it is the insoluble solid which is formed when two aqueous solution magnesium chloride and lithium carbonate chemically combine together.

Thus, we can conclude that yes the given double-replacement reaction will produce a precipitate, the [tex]MgCO_{3}[/tex] will precipitate.

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