20. What is the pH of the solut 500.0 mL of solution? ion when 0.321 g...
find pH when a 500.0 mL solution has 0.30 M NH3 and 0.50 M NH4Br. For NH3, Kb = 1.76 × 10-5 .
What is the pH of solution when 25.5 g sodium acetate is added to 0.550 M acetic acid to make 500.0 mL of solution?
Calculate the pH of a 500.0 mL solution that is 0.30 M NH3 and 0.50 M NH4Br. For NH3, Kb = 1.76 × 10-5 .
Calculate the following: a. The pH of a 500.0 mL buffer solution containing 0.75 M HCN (Ka = 6.2 x 10^-10) and 0.55 M NaCN b. The pH of the above buffer after the addition of 100.0 mL of 1.0 M NaOH. c. The pH of the buffer if 100.0 mL of 1.0 M HCl was added to the solution in part a.
3. a) What will be the resultant pH for the solution when 20 mL of 0.1 M KOH is completely neutralized with 0.2 M of CH3COOH. (Ka of CH3COOH = 1.85 x10-5) b) What will be the pH when 20 mL of 0.1M CH3COOH was added later to the solution (a)?
We have 500.0 mL of a buffer solution that is 0.636 M in NH3 and 0.345 M in NH4Cl. We add 500.0 mL of a solution 0.249 M in HCl. The final volume is 1.0000 L. The Kb value for NH3 is 1.8 x 10-5. What is the pH of the final solution?
What is the pH change when 19.5 mL of 0.108 M NaOH Is added to 71.0 mL of a buffer solution consisting of 0.127 M NH3 and 0.161 M NH4? ( for ammonium ion is 5.6*10^-10.) pH change =
5. You need to make 500.0 mL of a buffer with a pH of 2.20. You have the following substances to work with: 0.100 M NH3 Solid NaN3 Solid NaClO2 0.100 M HClO2 Solid NH4Cl Solid Na2SO3 0.100 M HN3 Solid NaHSO3 Ka for HClO2 = 1.1x10-2 Kb for NH3 = 1.8x10-5 Ka for HN3 = 1.9x10-5 Ka1 for H2SO3 = 1.7x10-2 Ka2 for H2SO3 = 6.4x10-8 (Assume that the addition of solid does not change the volume of the...
Quick Please! What is the pH of a solution produced by mixing 500.0 mL of 0.200 M sodium butyrate and 500.0 mL of 0.400 M butyric acid (pK-4.82)? 0 6.82 0 4.52 0 4.82 0 2.82 05.12
20. If 10 mL of 0.05 M NaOH is added to a 20 mL solution of 0.1 M NaNO2 and 0.1 M HNO2, what will be the pH of the resultant solution? Assume that volumes are additive. Ka for HNO2 = 7.1x10-4. 21. At 25°C, 50.0 mL of 0.50 M NaOH(aq) is added to a 250 mL aqueous solution containing 0.30 M NH3 and 0.36 M NH4Cl. What is the pH of the solution after the addition of the base?...