A buffer system has a pk, of 8.5. What is its effective buffering range? B 5...
The bicarbonate buffer has a pKa =6.4. What is the effective buffering range for the bicarbonate buffer? 14. The bicarbonate buffer has a pKa 6.4. What is the effective buffering range for the bicarbonate buffer? Also, what is the function of a buffer in a biological system?
A) If the weak acid in a buffer system has pKa 10.5, in what pH range is the system a most effective buffer? B) In the phosphate buffer system containing K2HPO4 and KH2PO4, what is the weak acid? What is its conjugate base?
Question 2 3 pts What is the role of Cas9 in a bacterial cell? Explain the general function of this protein. HTML Editor V : BI ME A - A - Ix 5 N Vx young 3 V x TT x 12pt E - Paragraph D © @ O words Question 3 3 pts Explain the contributions of of Francisco Mojica in the discovery of CRISPR in one paragraph. HTML Editora B I - U D A - A -...
\ Part 3: Preparing and testing the carbonic acid/bicarbonate buffer 3) and 6) Buffer 0.1 MHCI A: Buffer A: Buffer B: Butter B: Buffer Part 4: Testing water for pH resistance 2) and 5) DFDFDF A: HO B: H0 Question 6 1 pts pH in Beaker A pH in Beaker B After 5 drops NaOH Solution Initial After 5 drops HCI After 20 drops HCI Initial After 20 drops NaOH Buffer (part 3) Water (part 4) Use the data...
Question 16 O pts Weak acid A has a pK, of 3.2, while weak acid B has a pk, of 5.6. Is Weak acid A or B the stronger of the two? HTML Editora BI AA - E 211 1 *, SE - O N V V V D S 12pt - Paragraph O words
please answer number 5 and 6 5. The buffer range for a given weak acid/conjugate base pair is pK, 11. Explain why. 6. A weak triprotic acid, HZZ has the following K, values: Ki = 1.4 x 104 K = 9.7 x 10-7 K 5.3 x 109 a. Write the NIE associated with each Ka value. b. Of the four weak acid species: H.Z, H,Z, HZz"; which two could be used to prepare a buffer of pH = 3.55? Explain....
5. Tris i.e. [tris(hydroxymethyl)aminomethane) is commonly used as a buffer in bioanalytical studies. The pk of Tris is 8.1 at 20°C. (a) Calculate the pH of the Tris buffer after mixing 12.0 mL of 0.15 M of a HCl solution with 20.0 mL of a 0.20 M solution of Tris. (5 points) (b) An amount of 0.00017 mol of H+ was consumed during an enzymatic reaction. What is the pH of the buffer at the end of the reaction? (5...
Question 11 5 pts What are the four main steps for conducing a hypothesis test? HTML Editore B IV AA- IX ET 13 IX X, SE V TT 12pt Yes O words
help with 5 and 6 please 5. Choose the effective pH range of a HF/Naf buffer. For HF, Ka = 3.5 x 10-4 6. If a small amount of a strong acid is added to buffer made up of a weak acid, HA, and the sodium salt of its conjugate base, NaA, the pH of the buffer solution does not change appreciably because a) the Ka of HA is changed. b) the strong acid reacts with Ato give HA, which...
Given the following hexadecimal number DEAB 16. what is its binary and decimal equivalent? Binary: Decimal HTML Editor BIVA - A - Ix 5 3 3 3 3 x x : E - O N V celom V 11 12pt - Paragraph O words