In Qualitative Test for Anions, the white solid was dissolved when CH3COOH (aq) was added to the barium salt for phosphate, but not for sulfate. Why? a. Because Ba(CH3COO)2 is a stronger base than BaSO4, but not than Ba(OH)2 b. Because Ba(CH3COO)2 is a stronger base than Ba3(PO4)2, but not than BaSO4 c. Because CH3COOH is a stronger acid than H2SO4, but not than H3PO4 d. Because CH3COOH is a stronger acid than H3PO4, but not than H2SO4

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Phenol Red: What is the purpose of this test?  Why is a Durham tube inverted inside the test tube? At what pH does phenol red register an acidic result?  What is the color? What is the color of an alkaline result?  If you see an acid result, what does this mean?  What about an alkaline result?

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Which of the following salts will form acidic solutions in water? Fe(NO3)3, LiClO4, Na3PO4, CrCl3, KNO2 1. only Fe(NO3)3 2. only LiClO4 3. LiClO4, Na3PO4 and KNO2 4. only Fe(NO3)3 and CrCl3 5. only Na3PO4

1. Calculate the pH of a solution that is 0.0400 M in a) NaH,PO, b) NaHC2O. c) NaHS

CuS will be solub‎le in aci‎dic pH bec‎ause a. S-2 is the con‎jugate b‎ase of a we‎ak acid‎, H2S and Cu+2 is co‎unter-ion of a stro‎ng base Cu(OH)2. b. Cu+2 is a Le‎wis acid and S-2 is the cou‎nter-ion of stro‎ng acid , H2S. c. Cu+2 is a conj‎ugate acid of a we‎ak base Cu(OH)2 and S-2 is the cou‎nter-ion of strong acid, H2S. d. S-2 is the conjug‎ate base of a we‎ak acid HS- and Cu+2 is counte‎r-ion of a str‎ong b‎ase Cu(OH)2.

4. What is the pH of 39.74 mL of a 0.1888 M solution of a weak monobasic base (B:, Kb = 9.56 x 10-6) prior to its titration with 0.1765 M HClO3?   Your answer must have 2 decimal places.

Which of the following will be able to reduce Pb2+?  Li+LiAu+Au

Pls help ASAP