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Question: please write how you got to your answer as well...

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Please write how you got to your answer as well as your answer. Thank you so much!

5. Identify which of the possible unknowns for this experiment would give the following behavior. A clear, blue solution of the unknown tested acidic to indicator paper. There was no reaction when this unknown was tested with either AgNOs(aa), dilute H2SO4, or BaCl2(gq). A black precipitate was formed when the unknown was treated with NazS(aa) A pale blue precipitate was formed when the unknown was treated with KOH(aq) Write a balanced molecular equation including states of matter for the reactions observed with Na2S and KOH.

The possible unknowns are listed in the table below:

HCl HNO3 H2SO4
KOH NH3 Na2S
NaCl CuCl2 BaCl2
AgNO3 Cu(NO3)2 Fe(NO3)3
NaI Na2SO4 Na2CO3
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