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Be sure to answer all parts. Calculate the pH of the following two buffer solutions: (a)...
Calculate the pH of the following two buffer solutions: (a) 1.9 M CH,COONa/1.0 M CH,COOH. (b) 0.2 M CH,COONa/0.1 M CH,COOH.
You will prepare two of the buffer solutions used in this lab. They are the 0.1 M CHaCOOH/CH3COONa buffer at pH- 4.74 and at pH-6. You will need to write your own procedure for the preparation of these buffers. To write the procedure, study the manual and follow the pre-lab questions. Using Henderson-Hasselbach equation to calculate the ratio of [CH,COONa/[CH COOH] for each buffer and write your answers in the table on the right. Show calculations: 1. 2. You just...
Check my work Be sure to answer all parts. Report pro Hint Calculate the pH of 1.00 L of the buffer 1.03 M CH,COONa/0.96 M CH,COOH before and after the addition of the following species. (Assume there is no change in volume.) (a) pH of starting buffer: (b) pH after addition of 0.070 mol NaOH: (e) pH after further addition of 0.100 mol HCI: < Prev 11 of 22 Next >
Be sure to answer all parts. Calculate the pH of 1.00 L of the buffer 0.94 M CHCOONa/0.92 M CH,COOH before and after the addition of the following species. (Assume there is no change in volume.) (a) pH of starting buffer: (b) pH after addition of 0.065 mol NaOH: (c) pH after further addition of 0.117 mol HCI: Prey 10 of 10
Be sure to answer all parts. Which of the following has the smallest buffer capacity towards the addition of NaOH? 0.40 M CH3COONa/0.20 M CH3COOH 0.40 M CH3COONa/0.60 M CH3COOH 0.30 M CH3COONa/0.60 M CH3COOH Which of the following has the smallest buffer capacity towards the addition of HCl? 0.40 M CH3COONa/0.20 M CH3COOH 0.40 M CH3COONa/0.60 M CH3COOH 0.30 M CH3COONa/0.60 M CH3COOH
(a) 1.9 M CH3COONa/1.0 M CH,COOH (b) 0.2 М СН,СОONa/0.1 M CH,CОон. Which is the more effective buffer? 1.9 М СH,COONa/1.0 M СH,сОон А. 0.2 M CH3COON a/0.1 M CH3COOH В.
15. value: 1.00 points 10 attempts left Check my work (? Be sure to answer all parts. Report problem Calculate the pH of 1.00 L of the buffer 1.01 M CH3COONa/0.90 M CH3COOH before and after the addition of the following species. (Assume there is no change in volume.) Hint Guided Solution (a) pH of starting buffer: (b) pH after addition of 0.080 mol NaOH: (c) pH after further addition of 0.118 mol HCl:
Be sure to answer all parts. Calculate the pH of each of the following solutions. (a) 4.1 × 10−4 M Ba(OH)2: × 10 (Enter your answer in scientific notation.) (b) 2.3 × 10−4 M HNO3:
Be sure to answer all parts. Calculate the pOH and pH of the following aqueous solutions at 25 ° C: (a) 0.0775 M LiOH pH = pOH = (b) 0.0441 M Ba(OH)2 pH = pOH = (c) 0.25 M NaOH pH = pOH
You have to prepare a pH 3.65 buffer, and you have the following 0.10M solutions available: HCOOH, CH3COOH, H3PO4, HCOONa CH3COONa, and NaH2PO4 Part A Which solutions would you use? Check all that apply. HCOOH CH3COOH H3PO4 HCOONa CH3COONa NaH2PO4 Submit Request Answer