You have 75.0 mL of 0.10 M HA. After adding 30.0 mL of 0.10 M NaOH, the pH is 5.50. What is the Ka value of HA?
Answer to relevant QuestionsWhat is an acid–base indicator? Define the equivalence (stoichiometric) point and the endpoint of a titration. Why should you choose an indicator so that the two points coincide? Do the pH values of the two points have to ...Which of the indicators in Fig. could be used for doing the titrations in Exercises 65 and 67? Fig Calculate the solubility of each of the following compounds in moles per liter and grams per liter. (Ignore any acid–base properties.) a. Ag3PO4, Ksp = 1.8 × 10-18 b. CaCO3, Ksp = 8.7 × 10-9 The concentration of Mg2+ in seawater is 0.052 M. At what pH will 99% of the Mg2+ be precipitated as the hydroxide salt? [Ksp for Mg(OH)2 = 8.9 × 10-12.] The copper(I) ion forms a chloride salt that has Ksp = 1.2 × 10-6. Copper(I) also forms a complex ion with Cl2: Cu+(aq) + 2Cl-(aq) ⇌ CuCl2-(aq) K = 8.7 × 104 a. Calculate the solubility of copper(I) chloride in pure ...
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