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You may have noticed an (s) next to one of the products in some double replacement reactions. An (s)
next to a compound signifies that it is an insoluble solid, also know as a precipitate. Precipitates can be
either cloudy or chunky substances of various colors in an ionic solution. To predict if a product in a
double replacement reaction forms a precipitate, you need to use the solubility rules found here.
For each reaction below, use the drop-down menus to select which compound will form a precipitate.
Note: It is possible that no precipitates form.
Na₂S + Cd(NO3)2 - CdS + 2NaNO3
FeCl3 + 3KOH 3KCI+ Fe(OH)3
Na₂CO3 + Ba(NO3)2 → BaCO3 + 2NaNO3

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We can see that in all three reactions, a precipitate was formed as shown.

What is a precipitate?

A precipitate is a solid that separates from a reaction mixture in the aqueous phase.

Now let us consider which of the reactions would yield a precipitate;

Na₂S(aq) + Cd(NO3)2(aq) ------> CdS(s) + 2NaNO3(aq) - precipitate

FeCl3(aq) + 3KOH(aq) ------> 3KCI(aq)+ Fe(OH)3(s) - precipitate

Na₂CO3(aq) + Ba(NO3)2(aq) → BaCO3(s) + 2NaNO3(aq) - precipitate

Learn more about precipitate:https://brainly.com/question/18109776

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Answer: Na2S + Cd(NO3)2 → CdS + 2NaNO3

✔ cadmium sulfide

FeCl3 + 3KOH → 3KCl + Fe(OH)3

✔ iron (III) hydroxide

Na2CO3 + Ba(NO3)2 → BaCO3 + 2NaNO3

✔ barium carbonate

Explanation:

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