Chem 129 Topic Set 7 Variations of titration and Buffers G. How would you make 350mL of a buffer with a total concentration of 0.75M and a pH of 9.00 from the list of materials below? (your answer should include the volumes of two solutions and the amount of DI water needed to reach the total volume) [remember: vol* total conc->total moles->moles weak, targetpH->ratio->stoich->moles strong] i. A solution of 1.25 M hydrochloric acid ii. A solution of 1.25 M sodium hydroxide iii. A solution of 1.25 M chloroacetic acid (pKa = 2.85) iv. A solution of 1.25 M ammonia (pka = 9.25) v. A solution of 1.25 M carbonic acid (pKa1 = 6.37, pKa2 = 10.32 vi. A solution of 1.25 M acetic acid (pka = 4.75) Ditutionen 1) What would be the volume of weak component and what would be the volume of strong component? MV MV (0.75) (350) = 1.25 (x) ne modified x = 210 mL 2) What would be the capacity of the buffer? 3) After the buffer is made, what would the pH change to if 24.5mL of 1.25 M hydrochloric acid is added? 4) After the buffer is made, what would PH to IF 37.3 mL of 1.25 M sodium was added change hydroxide

Chem 129 Topic Set 7 Variations of titration and Buffers G. How would you make 350mL of a buffer with a total concentration of 0.75M and a pH of 9.00 from the list of materials below? (your answer should include the volumes of two solutions and the amount of DI water needed to reach the total volume) [remember: vol* total conc->total moles->moles weak, targetpH->ratio->stoich->moles strong] i. A solution of 1.25 M hydrochloric acid ii. A solution of 1.25 M sodium hydroxide iii. A solution of 1.25 M chloroacetic acid (pKa = 2.85) iv. A solution of 1.25 M ammonia (pka = 9.25) v. A solution of 1.25 M carbonic acid (pKa1 = 6.37, pKa2 = 10.32 vi. A solution of 1.25 M acetic acid (pka = 4.75) Ditutionen 1) What would be the volume of weak component and what would be the volume of strong component? MV MV (0.75) (350) = 1.25 (x) ne modified x = 210 mL 2) What would be the capacity of the buffer? 3) After the buffer is made, what would the pH change to if 24.5mL of 1.25 M hydrochloric acid is added? 4) After the buffer is made, what would PH to IF 37.3 mL of 1.25 M sodium was added change hydroxide

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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help please answer in text form with proper workings and explanation for each and every part and steps with concept and introduction no AI no copy paste remember answer must be in proper format with all working
8:34 ul LTE O 1 Files This account does not allow editing on your Sign in device. For an account with full acces...more solutions), and pink at pH values above 9 (i.e. basic solutions). We expect that the endpoint is very close to the equivalence point, so we treat it as the equivalence point in our calculations. Page | 1 Lab 14: Acid-Base Titration Oxnard College Video of the endpoint in a phenolphthalein acid-base titration: https://youtu.be/ukSR 2D 7Ug In acidic solution In basic solution equivalence point Pre-Lab Assignment For questions 1-4 below, 20.0 mL of a hydrofluoric acid (HF) of unknown concentration 0.121 M potassium hydroxide (KOH). titrated with 1. In the diagram below, mark where the HF, the KOH, and the indicator would be found. 2. Write a balanced chemical equation to show the neutralization of HF with KOH. (Include phases.) 3. What color is phenolphthalein in acidic solutions? What color is phenolphthalein in basic solutions? What color is phenolphthalein before the…
6. Which of the following form buffer systems? Circle all that qualify. a) NH,CI, NH, b) NH,, HNO, c) HPO,, H,PO. d) HCI, CI 7. Calculate the ratio of (HPO. V[H:PO.] in blood at pH 7.32. 8. How you would prepare a 1.50 M buffer with a pH of 2.007 a) Give the ingredients. b) Calculate the ratio of salt (conjugate base) to acid needed. c) Use the total buffer concentration to figure out exact concentrations of each component.
How did diluting the buffer affect the pH of the buffer solution itself? ( pls explain it asap!) Thank you
Plz do Asap....!
Which of these apply to the Image (attached)? There should be 4 total answers: A. High End pH B. High Initial pH C. Vertical Line with Equivalence Point Tall D. Equivalence Point Not at pH 7 E. Equivalence point at pH 7 F. low end pH G. low initial pH H. Vertical Line with Equivalence Point Short Using the info identified above, what type of analyte and tirant combo are in the image. Options for Analyte and Titrant: - Weak base - Strong Acid - Strong Base - Weak Acid
How many grams of solid ammonium bromide should be added to 1.00 L of a 0.260 M ammonia solution to prepare a buffer with a pH of 8.480? Mass= Submit Answer g Retry Entire Group 9 more group attempts remaining
Item 10 MISSED THIS? Watch KCV 122. IWE 17.2. IWE 17.3: Read Section 17.2. You can click on the Review link to access the section in your eText Blood is buffered by carbonic acid and the i bicarbonate ion. Normal blood plasma is 0.024 M in HCO, and 0.0012 M in H₂CO,. (pK₁ for H₂CO, at body temperature is 6.1.) Part min Given the volume from Part B, what mass of NaOH could be neutralized before the pH rose above 8.2? Express your answer to two significant figures. Submit 196] ΑΣΦΑ Previous Answers Request Answer 10 of 26 Beview I Constants I Periodic Table 6
A1.0-L buffer solution is 0.125 mol L in HNO, and 0.190 mol Lin NANO,. For nitrous acik K. = 5.6 x 10-4. Part A Determine the concentrations of HNO, and NaNO, ater the adition of 1.3 g HCL. Express your answers in moles per litre to two significant figures separated by a comma. > View Available Hint(s) HNO,), ĮNANO, = mol L1 Submit Part B Determine the concentrations of HNO, and NaNO, after the addition of 1.3 g NaOH. Express your answers in moles per litre to two significant figures separated by a comma. • View Available Hint(s) ? (HNO,), ĮNANO,) = mol L-1 Submit
help please answer in text form with proper workings and explanation for each and every part and steps with concept and introduction no AI no copy paste remember answer must be in proper format with all working
Kw in Kb equation????
Im not sure what my teacher means by this, any suggestions or help would be greatly appreciated!