
What is the pH of 2x10 M solutions of the drug shown below (Ketoprofen, pKa =...
What is the pH of 5x10-3M solutions of the drug shown below (Atropine,pka = 9.7:pKb = 4.3) used to treat fever? OH o A 3.3 O B 10.7 OC 6.0 OD 8.0 Unanswered 2 attempts left Submit
Which of the following 0.10 M aqueous solutions gives the highest pH? A) CH3COOH (pKa = 4.75) B) HF (PK:= 3.45) C) H3PO4 (pKal = 2.12) D) HCIQ (Ka=2.00) E) Since all are acids, the pH is the same for all solutions. 5. Which one of the following salts gives an acidic aqueous solution? A) CsNO3 B) CaCl2C ) LiF D) Cr(CIO4)3 E) NaCH3CO2 6. 7. All of the following are strong acids except A) HCIQB) HC104 C) HI D)...
Methyldopa (C10H13N04) is used to treat high blood pressure during pregnancy. Its molecular structure is shown below. The pka of the carboxylic group is 1.7 and the pk of the amine group is 4.2. Which of the following forms of this drug is likely to be present in our blood which has a pH close to 7.4? НО. ОН NH2 НО НО. он NH2 NH НО НО с. Но d. HO он NH2 HO НО o А а.
Homework - Unanswered What is the pH of a 0.00066 M solution of nitric acid (HNO3)? O A 6.6 O B 3.2 0 C 4.1 O D More information is needed to answer Unanswered Initial Concentration A Homework - Unanswered Distilled white vinegar is used for cooking but can also be used in many applications for cleaning. The
What is the molar hydronium ion concentration in solutions with each of the following pH values? (a) 4.0 (Ho']- (b) 8.0 [Ho (c) 10.0 [H:o] (d) 13.0 [Ho]- Submit Answer Try Another Version 2 item attempts remaining 0? ?? - F10 F11 2 3 M/
6) Calculate the pH and composition of solutions of (A) 0.10 M HFO4; (B) 0.10 ΜΗΡΟ: (C) 0.10 M HP042, and (D) 0.10 М РОГ. (pK-: 2.15, pK2= 7.20, and pKa = 12.35)
Biochem help 2
14. What would be the net charge on the dipeptide Ser-His at pH- 6.04? (Choose the one best answer.) a) 1.5 b) +1; c) +0.5 d) 0 e) -0.5; 15. The pKa of a lysine side chain in a protein ending up on the outside of a globular protein has a different pKa than if the lysine is buried within the interior of a protein. What would be the expected pKa of a side chain of lysine...
A8 The acid dissociation constants (pKa) of the amino acid aspartic acid are shown below. What is the isoelectric point (pl) of this amino acid? pk, 9.8 ΤΗΝ PK, 2.1 TOH OS pk 3.9 ОН (A) 6.9 (B) 6.0 (C) 3.9 (D) 3.0 (E) 2.1
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Describe how you would calculate the pH of the following 0.10 M aqueous solutions: (a) sodium monohydrogen phosphate (b) glycine hydrochloride (c) trisodium citrate For example: treat as monoprotic acid and use Kai; treat as intermediate form and use Ka, Ka... Find the pH of a solution prepared by dissolving 1.00 g of potassium hydrogen phthalate (204.221 g/mol) and 1.20 g of disodium phthalate (210.094 g/mol) in 50.0 mL of water. (pKai = 2.950, pK2 = 5.408) The...
In a titration, 25 mL of 0.10 M weak diprotic acid solution was titrated by 0.10 M sodium hydroxide, NaOH, and produced a titration curve listed below. (20 points total) 14,0 3. 12.0 10.0 8.0 pH 6.0 4.0 2.0 10.0 5.0 20.0 30.0 15.0 25.0 Volume of 0.100 M NaOH, mL The acid used in above titration is a weak diprotic acid. Briefly explain how you know it's diprotic from looking at the titration curve and how you know a...