6-21. If a solution containing 0.10 M Cl¯, Br ,I¯, and CrO? is treated with Ag*, in what order will the anions precipitate?

5. A total of 9.73 mL of KMnO4 solution was required to reach the end-point in a titration with 15.00 mL of a 0.0225 M K2C2O4 solution. What was the molar concentration of the KMnO4 solution? 5-10

7.  The separate samples of nitric and acetic acids are both titrated with a 0.100 M solution of NaOH(aq). (Y) 25.0mL of 1.0 M HNO3(aq)                      (Z) 25.0 mL of 1.0 M CH3COOH(aq)   Determine whether each of the following statements concerning this titration is true or false. (A) A larger volume of NaOH(aq) is needed to reach the equivalence point in the titration of HNO3 (B) The pH at the equivalence point in the HNO3 titration will be lower than the pH at the equivalence point in the CH3COOH titration (C) Phenolphthalein would be a suitable indicator for both titrations Group of answer choices a.) A) False B) True C) True b.) A) False B) False C) True c.) A) False B) True C) False d.) A) True B)True C)True

[Review topics] Use the References to access important values if needed for this question. [References] When 22.0 mL of a 6.65×10-4 M iron(II) bromide solution is combined with 22.0 mL of a 6.38×10-4 M ammonium sulfide solution does a precipitate form? (yes or no) For these conditions the Reaction Quotient, Q, is equal to Submit Answer Retry Entire Group 9 more group attempts remaining