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Create an ordered list of the tests you will perform on your unknown to identify its...

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Chemistry

Create an ordered list of the tests you will perform on yourunknown to identify its cation(Ba^{+2}, Pb^{+2}, Zn^{+2}) andanion(CO_3^{-2},SO_{4}^{-2}, PO_{4}^{-2},SCN^-, Cl^-, NO_3^-). Theprocedure for each test should be briefly described, along withwhat a positive and negative result looks like. Assume that eachtest returns a negative result, except for the last cation andanion test, so that you have to perform all of the tests.

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Thank you!

Answer & Explanation Solved by verified expert
3.6 Ratings (417 Votes)
cation analysis Ba2 Pb2 and Zn2 Test 1 First we will will add HCl to the mixture It will give white ppt It may be Ag or Pb2 or Hg2 So to confirm the presence of Pb2 we will add hot water It will dissolve the white ppt indicating the presence of Pb2 We will take a part of this dissolved ion solution confirmation test we wil add KI to the solution a yellow ppt will confirm the presence of Pb2 Pb2 2 KI PbI2 2 K Test 2 In presence of HCl on passing H2S no ppt formed Test 3 we will take the salt in water and then add ammonium chloride and ammonium hydroxide No ppt forms Test 4 Pass H2S gas through the Ammonical solution A dull white ppt will    See Answer
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