A buffer contains 0.015 mol of lactic acid (pKa = 3.86) and 0.080 mol of sodium lactate per liter. H₂C. OH Lactic acid OH Calculate the pH of the buffer. H₂C. OH Sodium lactate Calculate the change in pH after adding 9.0 mL of 0.10 M HCl to 1.0 L of the buffer. O Na+ Calculate the change in pH after adding 9.0 mL of 0.10 M HCl to 1.0 L of pure water. buffer pH: buffer pH change: water pH change: units. units
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- 80.00 mL of 0.350 M benzoic acid (K = 6.4×105) is titrated by 0.350 M NaOH. Calculate the pH of the acid solution before any titrant is added. PH Calculate the pH after 58.9 mL of 0.350 M NaOH is added to 80.00 mL of 0.350 M benzoic acid. pH = Calculate the pH after 80.00 mL of 0.350 M NaOH is added to 80.00 mL of 0.350 M benzoic ad pH = Calculate the pH after 110 mL of 0.350 M NaOH is added to 80.00 mL of 0.350 M benzoic acid. pH=Calculate pH of buffer prepared by mixing; 10ml of 0.10M of CH3COOH and 20ml of 0.10M of CH3COONa.A 25.00 mL sample of 0.320 M LIOH is titrated with 0.750 M HNO3 at 25 °C. Calculate the initial pH before any titrant is added. pH = Calculate the pH of the solution after 5.00 mL of the titrant is added. pH =
- Calculate the [OH-] and the pH of a solution with an [H] = 5.6 x 10-¹0 M at 25 °C. [OH-] = pH = Calculate the [H*] and the pH of a solution with an [OH-] = 0.059 M at 25 °C. pH = Calculate the [H] and the [OH] of a solution with a pH = 2.70 at 25 °C. [H*] = MUsing the Henderson-Hasselbalch equation, calculate the pH of a buffer solution made from 0.20 M CH3COOH and 0.050 M CH3COO- that has pk3= 4.7. 4.1 0.4 None of the answers is correct 2.5 5.3A 35 mL of solution of hydrochloric acid is neutralized by 15 mL of 0.5 M potassium hydroxide. What is the concentration of hydrochloric acid? The balanced equation is HCI + KOH - H,O + KCI O 0.75 M O 0.25 M O 0.214 M O 0.786 M
- From the Henderson-Hasselbach equation, calculate the ratio of dihydrogen phosphate (H2PO4-) and monohydrogen phosphate (HPO4-2) components required to produce buffer solution with1. pH 6.22. pH 7.23. pH 8.2Calculate the pH of the resulting solution if 23.0 mL of 0.230 M HCl(aq) is added to 33.0 mL of 0.230 M NaOH(aq). pH = Calculate the pH of the resulting solution if 23.0 mL of 0.230 M HCl(aq) is added to 13.0 mL of 0.330 M NaOH(aq). pH=The pHpH scale for acidity is defined by pH=−log10[H+] where [H+]is the concentration of hydrogen ions measured in moles per liter (M). A solution has a pH of 10.2. Calculate the concentration of hydrogen ions in moles per liter (M).