A compound has two carboxyls and one aminium group. The pKas of the groups are 1.9, 4.2, and 9.3, respectively. A biochemist has 100 mL of a 0.10 M solution of this compound at a pH of 5.6. She adds 39 mL of 0.1 M NaOH. To the nearest hundredth of a unit, what will be the pH of the solution after addition of the NaOH (assume full stirring to reach a new equilibrium)?

A chemist titrates 130.0 mL of a 0.7778 M lidocaine (C,„H NONH) solution with 0.1602 M HCl solution at 25 °C. Calculate the pH at equivalence. The 14 pK, of lidocaine is 7.94. Round your answer to 2 decimal places. Note for advanced students: you may assume the total volume of the solution equals the initial volume plus the volume of HCl solution added. dlo pH = | Explanation Check 2021 McGravw-Hill Education. All Rights Reserved Terms of Use PrivacyI Accessibility • 12:00 acer cspa 08. p

A solution is prepared that is initially 0.095 M in methylamine (CH,NH,), a weak base, and 0.38M in methylammonium chloride (CH,NH,CI). Complete the reaction table below, so that you could use it to calculate the pH of this solution. Use x to stand for the unknown change in [OH ]. You can leave out the M symbol for molarity. ОН [CH,NH.] [cH,NH;] [on ] initial change final

An analytical chemist is titrating 83.7 mL of a 0.3300M solution of isopropylamine ((CH,) CHNH, with a 0.5300M 2 solution of HNO3. The p K, of isopropylamine is 3.33. Calculate the pH of the base solution after the chemist has added 42.4 mL of the HNO, solution to it. Note for advanced students: you may assume the final volume equals the initial volume of the solution plus the volume of HNO, solution added. Round your answer to 2 decimal places. pH = | ?

Calculate the change in pH when 9.00 mL of 0.100 M HCl(aq) is added to 100.0 mL of a buffer solution that is 0.100 M in NH, (aq) and 0.100 M in NH, Cl(aq). Consult the table of ionization constants as needed. ApH = 9.17 Calculate the change in pH when 9.00 mL of 0.100 M NaOH is added to the original buffer solution. ApH 9.32 0

An analytical chemist is titrating 74.8 mL of a 0.7500M solution of propylamine (C,H,NH,) with a 0.2500M solution of HIO,. The p K, of propylamine is 3.46. Calculate the pH of the base solution after the chemist has added 265.9 mL of the HIO, solution to it. Note for advanced students: you may assume the final volume equals the initial volume of the solution plus the volume of HIO, solution added. Round your answer to 2 decimal places. olo pH = I Ar

A chemist titrates 210.0 mL of a 0.4409M hypochlorous acid (HCIO) solution with 0.7835M NaOH solution at 25 °C. Calculate the pH at equivalence. The pK, of hypochlorous acid is 7.50. Round your answer to 2 decimal places. Note for advanced students: you may assume the total volume of the solution equals the initial volume plus the volume of NAOH solution added. pH = ] ?

An analytical chemist is titrating 186.4 mL of a 0.3400M solution of methylamine (CH3NH₂) with a 0.6900M solution of HIO3. The pK² of methylamine is 3.36. Calculate the pH of the base solution after the chemist has added 98.0 mL of the HIO3 solution to it. Note for advanced students: you may assume the final volume equals the initial volume of the solution plus the volume of HIO3 solution added. Round your answer to 2 decimal places. pH = 1 X Ś

An analytical chemist is titrating 88.2 mL of a 0.2300M solution of nitrous acid (HNO₂) with a 0.5500M solution of NaOH. The pK, of nitrous acid is 3.35. Calculate the pH of the acid solution after the chemist has added 15.8 mL of the NaOH solution to it. Note for advanced students: you may assume the final volume equals the initial volume of the solution plus the volume of NaOH solution added. Round your answer to 2 decimal places. pH = 11 ? 0

10 An analytical chemist is titrating 120.4 mL of a 0.5800M solution of piperidine (C5H₁NH) with a 0.7600M solution of HNO3. The pK, of piperidine is 2.89. Calculate the pH of the base solution after the chemist has added 64.0 mL of the HNO3 solution to it. Note for advanced students: you may assume the final volume equals the initial volume of the solution plus the volume of HNO3 solution added. Round your answer to 2 decimal places. pH = 0 Ś