Calculate the pH for a 0.100 M Na2CO3 solution with a Kb1 of 2.1 x 10-4 and a Kb2 of 2.2 x 10-8
Calculate the pH for a 0.100 M Na2CO3 solution with a Kb1 of 2.1 x 10-4...
Solutions of piperazine are basic (Kb1 =5.4×10-5 ; Kb2 =2.2×10-9 ). What is the pH of a 0.0185 M solution of piperazine?
Calculate the pH for both a 0.100 M solution of HClO4 and a 0.100 M solution of a HClO (Ka = 2.9 × 10–8)? (Don't forget significant figures!)
Calculate the pH of a solution that is 0.100 M in hydrofluoric acid (HF) and 0.100 M in sodium fluoride (NaF). Ka of hydrofluoric acid is 6.3 x 10-4
Calculate the pH of a buffer solution containing 0.100 M CH3COOH and 0.100 M CH3COONa ; Ka of CH3COOH = 1.8 x 10-5
4. Calculate the pH and percent dissociation of the solution when 125.0 mL of 0.100 M HCI is added to 500.0 mL of 0.150 M sodium acetate (Kb = 5.71 x 10-10) ANSWER: pH = 5.456, 16.7%
Acid/Base titrations 10. 25.0 mL of 0.100 M H2A (a weak diprotic acid) is titrated with 0.200 M NaOH. What is the pH of the solution when 0.00 mL, 10.0 mL, 12.5 mL, 20.0 mL, 25.0 mL, and 40.0 mL E.S RaWeMA 5.83 x 10 8) have been added? (Ka1= 2.46 x 10, Ka2 ANSWER: 0 mL = 2.315, 10.0 mL= 4.211 (or 4.213), 12.5 mL = 5.422, 20.0 mL 7.410, 25.0 mL = 9.966, 40.0 mL = 12.664 11....
Determine the pH of a 0.125 M Na2CO3 solution. (Ka of H2CO3 = 5.6 x 10-11)
Calculate the pH of a solution formed by mixing 100.0 mL of 0.100 M NaF and 100.0 mL of 0.040 M HCI. Ka of HF = 7.24 x 10-4. A 3.32 B.3.54 C.3.14 D.2.74 E 2.96
3. Calculate the pH of a solution that contains 0.250 M HCOOH (formic acid) and 0.100 M NaCOOH (sodium formate). Given Ka = 1.8 x 10 - 4 for HCOOH. Please include the ICE table.
Problems Three & Four
Problem Three: Calculate the expected pH of a 0.100 M solution of ammonium chloride given that Kb for ammonia is 1.76 x 105. pH = Problem Four: 0.100 moles of NaOH are combined with 0.125 moles acetic acid. The mixture is tal mixture is taken to a final volume of 100.0 ml. What is the expected pH of the solution? Use K, for acetic acid of 1.76 x 10-5 pH-