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A solution of barium nitrate, Ba(NO₃)₂, is mixed with sodium sulfide, Na₂S. What will be the precipitate?

a.) BaS
b.) BaNO₃
c.) Both BaS and NaNO₃
d.) none

1 Answer

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Final answer:

When barium nitrate is mixed with sodium sulfide, the precipitate formed is barium sulfide, BaS as barium sulfate is slightly soluble and nitrates are highly soluble.

Step-by-step explanation:

When barium nitrate, Ba(NO₃)₂, is mixed with sodium sulfide, Na₂S in solution, the precipitate that forms is barium sulfide, BaS. According to the rules of solubility and the reaction that takes place, barium sulfate (BaSO₄) is the only slightly soluble salt that could be formed in this scenario, and will precipitate out of the solution. This is due to the fact that nitrates like NaNO₃ are highly soluble and do not typically form precipitates. Therefore, the correct answer would be a.) BaS.

User Onur Topal
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