analytical practice problems
Q1: How many grams of dipotassium phtalate (MW = 242.31 g/mol) should be added to 30.00 mL of 0.400 M HClO_{4} to give a pH of 5.10 when the solution is diluted to 500 mL?
Q2: What is the pOH of:
(a) a 0.0100 F solution of phtalic acid?
(b) a 0.0100 F solution of monopotassium phtalate?
(c) a 0.0100 F solution of dipotassium phtalate?
if pK_{a1} = 2.950 and pK_{a2} = 5.408 for phtalic acid.
Q3: Calculate the volume of 0.150 M NaOH titrant added to 50.00 mL of a 0.0100 M HCl analyte solution to produce a pH of: 2.00, 2.11, 7.00, and 11.60.
Q4: A 100.0 mL solution of 0.5 M histidine in its tribasic form, A^{3-}, (pK_{a1} = 1.70, pK_{a2} = 6.02, pK_{a3} = 9.08) is titrated with 1.0 M HCl titrant.
(a) calculate the volume of titrant required to reach the second equivalence point,
(b) calculate the pH after the addition of 50.0 mL of titrant,
(c) calculate the pH after the addition of 62.0 mL of titrant,
(d) calculate the pH after the addition of 75.0 mL of titrant.
Q5: A 100 mL volume of a 0.100 M weak base (pK_{b} = 5.00) was titrated with 1.00 M HClO_{4}. Find the pH at the following volumes of added acid: 0.00, 1.00, 5.00, 10.00, and 10.10 mL.
Q6: A 100.00 mL volume of 0.0400 M propionic acid (CH_{3}CH_{2}COOH; K_{a} = 1.34 ´ 10^{-5}) was titrated with 0.0837 M NaOH. Calculate the pH after the addition of: 0 V_{e}, 0.25 V_{e}, V_{e}, and 1.1 V_{e} mL of titrant where V_{e} is the volume of NaOH required to reach the equivalence point.
Looking for solution of this Assignment?
WHY CHOOSE US?
We deliver quality original papers |
Our experts write quality original papers using academic databases. |
Free revisions |
We offer our clients multiple free revisions just to ensure you get what you want. |
Discounted prices |
All our prices are discounted which makes it affordable to you. Use code FIRST15 to get your discount |
100% originality |
We deliver papers that are written from scratch to deliver 100% originality. Our papers are free from plagiarism and NO similarity |
On-time delivery |
We will deliver your paper on time even on short notice or short deadline, overnight essay or even an urgent essay |