Which of the following solutions is best for titrating an analyte solution containing sodium lactate, CH3CH(OH)CO2Na? Aqueous sodium carbonate, Na2CO3(aq) Aqueous ammonia, NH3(aq)  Nitric acid, HNO3(aq) Acetic acid, CH3CO2H(aq) Aqueous sodium hydroxide, NaOH(aq)

2. Dr. Dahm has prepared 250 mL of a acetate buffer which contains 0.1 mol of acetic acid (CH₂COOH) and 0.15 moles of acetate (CH₂COO). Determine the initial pH. If he then adds 0.025 moles of H* calculate the new pH. Ka = 1.8 × 10³ CH₂COOH(aq) + H₂O CH₂COO (aq) + HO (aq) 3. Dr. Dahm makes a second acetate buffer exactly the same way as in #2, but he then adds 15 mL of 0.50 M NaOH calculate the new pH.

a A volume of 500.0 mL of 0.130 M NaOH is added to 585 mL of 0.250 M weak acid (K₂ = 6.46 x 10-5). What is the pH of the resulting buffer? HA(aq) + OH¯(aq) → H₂O(1) + A¯(aq) pH =

Calculate the pH for each case in the titration of 50.0 mL of 0.110 M HClO(aq)0.110 M HClO(aq) with 0.110 M KOH(aq).0.110 M KOH(aq). pka = 7.40 ka= 4.0*10^-8 What is the pH after addition of 50.0 mL KOH? What is the pH after addition of 60.0 mL KOH?

Calculate the pH for each case in the titration of 50.0 mL of 0.230 M HClO(aq) with 0.230 M KOH(aq). Use the ionization constant for HCIO. What is the pH before addition of any KOH? pH What is the pH after addition of 25.0 mL KOH? pH = What is the pH after addition of 30.0 mL KOH? = pH = pH = What is the pH after addition of 50.0 mL KOH? pH What is the pH after addition of 60.0 mL KOH?

Calculate the pH for each case in the titration of 50.0 mL of 0.180 M HCIO(aq) with 0.180 M KOH(aq). Use the ionization constant for HC1O. What is the pH before addition of any KOH? КОН? pH = %3D What is the pH after addition of 25.0 mL KOH? pH = What is the pH after addition of 30.0 mL KOH? pH = What is the nH after addition of 50.0 ml. KOH? Question Source: McQuarrie, Rock, And Gallogly 4e General Chemsitry | Publisher: Ur

Each row of the table below describes an aqueous solution at 25 °C. The second column of the table shows the initial components of the solution. • Use the checkboxes in the third column to explain the type of the initial solution. The fourth column describes a change in the solution. • Use the fifth column to predict how the change in the solution will change its pH. solution initial components A B C D H₂O H₂O, NaOH H₂O H₂O, NaOH initial type (check all that apply) acidic basic neutral acidic basic neutral acidic basic neutral acidic basic оо 00 neutral change add HCl add Na Br add K Cl add H Br effect of change on pH (check one) pH higher pH lower ο ο1ο ο ο ο ο ο pH the same pH higher pH lower pH the same pH higher pH lower pH the same pH higher pH lower pH the same