Question

1. In your own words explain the common ion effect. 2. What would happen to the volume of titrant needed to reach the equivalence point, if some of the solid particles were part of the analyte transferred into the Erlenmeyer flask? 3. In this experiment should the Kremain constant in this experiment? Why or why not? 4. Determine the mole ratio of sodium thiosulfate to the thiosulfate ion in the dissociation reaction: Na,3.0, -> 2Nat + 5.0, 5. Determine the mole ratio of the thiosulfate ion to the iodine molecule in the titration reaction: 12a + 25,0, 2109) + S.O(aq) 6. Determine the mole ratio of the iodine molecule to the iodate ion in the titration reaction: 103 (aq) + 51 + 6H30 312/04 + 9H,01 C

Answer 1

1) Common in effect is when the solubility of a salt is being affected by the presence of an ion which is common to the any of the ion in the salt ion pais, The common example is! HA HITA MA Z meta presence of MA will lead the HA dissociation to be diren backward. 2 The volume required will be less than the expected since the analyte will be in less quantity due to loss of the solid particles