ABC26PH0733 · The pH of a solution prepared from 0.005 mole of Ba(OH)2 in 100 cc water is · 2001-2022
ABC26PH0734 · The solubility products (Ksp ) for three salts MX, MY2 and MZ3 are 1 10-8, 4 10-9 and 27 10-8, respectively. The solubility of these salts… · 2001-2022
ABC26PH0735 · (a) Calculate the pH of a solution obtained by mixing 50.00 mL of 0.20 M weak acid HA (Ka=10-5) and 50.00 mL of 0.20 M NaOH at room… · 2001-2022self-practice
ABC26PH0736 · The pH of a 1.0 10-3 M solution of a weak acid HA is 4.0. The acid dissociation constant Ka is: · 2001-2022
ABC26PH0737 · Which one of the following species is the conjugate base of HO-? · 2001-2022
ABC26PH0738 · If Ksp is the solubility product of a sparingly soluble salt A3 X2, then its solubility is · 2001-2022
ABC26PH0739 · The pH of a 1 10-8 M HCl solution is close to · 2001-2022
ABC26PH0740 · A 50 mL solution of 0.1 M monoprotic acid (Ka=1 10-5 . at 298 K) is titrated with 0.1 M NaOH at 298 K . Calculate the solution after the… · 2001-2022self-practice
ABC26PH0741 · The minimum concentration of silver ions that is required that is required to start the precipitation of Ag2 S (Ksp=1 10-51 ) in a 0.1 M… · 2001-2022
ABC26PH0742 · The hydrolysis constant (Kh ) of NH4 Cl is 5.6 10-10. The concentration of H3 O+in a 0.1 M solution of NH4 Cl at equilibrium is · 2001-2022
ABC26PH0743 · The acid dissociation constant (Ka ) for HCOOH, CH3 COOH, CH2 ClCOOH and HCN at 25 C are 1.8 10-4, 1.8 10-5, 1.4 10-3 and 4.8 10-10… · 2001-2022
ABC26PH0744 · At 298 K , calculate the solubility of metal sulfide, MS(s), in a saturated solution of H2 S where the concentration of H2 S and pH are… · 2001-2022self-practice
ABC26PH0745 · At 25°C, the solubility product (Ksp ) of CaF2 in water is 3.2 10-11. The solubility (in mole per kg of water) of the salt at the same… · 2001-2022
ABC26PH0746 · The pKa values of H3 PO4 are 2.12, 7.21 and 12.67. The pH of a phosphate buffer containing 0.2 M NaH2 PO4 and 0.1 M Na2 HPO4 is ____ · 2001-2022self-practice
ABC26PH0747 · At 298 K, 0.1 mol of ammonium acetate and 0.14 mol of acetic acid are dissolved in 1 L of water. The pH of the resulting solution is… · 2001-2022
ABC26PH0748 · The solubility of PbI2 in 0.10 M KI(aq) is ____ 10-7 M (rounded up to two decimal places). [The solubility product, Ksp=7.1 10-9 ] · 2001-2022self-practice
ABC26PH0749 · One liter of a buffer solution contains 0.004 mole of acetic acid (pKa=4.76 ) and 0.4 mole of sodium acetate. The pH of the solution is… · 2001-2022self-practice
ABC26PH0750 · A buffer solution is prepared by mixing 0.3 M NH3 and 0.1 M NH4 NO3. If Kb of NH3 is 1.6 10-5 at 25 C, then the pH (rounded off to one… · 2001-2022self-practice