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ChemistryChemistry
26 June, 14:01

Which of the following pairs of aqueous solutions will form a precipitate when mixed?

a) Na2 SO4 + KOH

b) CaS + Na2SO4

c) K2CO3 + NaCl

d) None of these solution pairs will produce a precipitate.

e) All of these solution pairs will produce a precipitate.

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Answers (1)
  1. 26 June, 16:34
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    I think the correct answer from the choices listed above is option B. The reactants calcium sulfide and sodium sulfate will react and form a precipitate which is calcium sulfate since it is only slightly soluble in aqueous solution. Hope this answers the question.
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Home » Chemistry » Which of the following pairs of aqueous solutions will form a precipitate when mixed? a) Na2 SO4 + KOH b) CaS + Na2SO4 c) K2CO3 + NaCl d) None of these solution pairs will produce a precipitate.
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