Two drops of indicator HIn (Ka = 1.0 × 10–9), where HIn is yellow and In- is blue, are placed in 100.0 mL of 0.10 M HCl.
Answer to relevant QuestionsA certain indicator HIn has a pKa of 3.00 and a color change becomes visible when 7.00% of the indicator has been converted to In-. At what pH is this color change visible? When a diprotic acid, H2A, is titrated with NaOH, the protons on the diprotic acid are generally removed one at a time, resulting in a pH curve that has the following generic shape: a. Notice that the plot has essentially ...Use the following data to calculate the Ksp value for each solid. a. The solubility of CaC2O4 is 6.1 × 10–3 g/ L. b. The solubility of BiI3 is 1.32 × 10–5 mol/ L. For which salt in each of the following groups will the solubility depend on pH? a. AgF, AgCl, AgBr b. Pb(OH)2, PbCl2 c. Sr(NO3)2, Sr(NO2)2 d. Ni(NO3)2, Ni(CN)2 Will a precipitate of Cd(OH)2 form if 1.0 mL of 1.0 M Cd(NO3)2 is added to 1.0 L of 5.0 M NH3? Cd2+(aq) + 4NH3(aq) ⇌ Cd(NH3)42+(aq) K = 1.0 × 107 Cd(OH)2(s) ⇌ Cd2+(aq) + 2OH-(aq) Ksp = 5.9 × 10-15
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