Calculate and formulate an opthalmic buffer solution of boric acid (pKa= 9.24) and sodium borate. To...
Calculate and formulate an opthalmic buffer solution of boric acid (pKa= 9.24) and sodium borate. To make it pH 9.0 with buffer capacity of 0.02, the molar concentrations of boric acid and sodium borate should be ___ Mol/L.
Homework Answers
![solution Given that boxic acid. Pka = 9.24 - pH=9.0 buffex capacity 20.02 [boxic acid] + [sodium boste ] = 0.2 M. [sodiam bon](http://img.homeworklib.com/questions/e7c8cc20-7579-11ea-afa1-7f30ff0399d4.png?x-oss-process=image/resize,w_560)
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Calculate and formulate an opthalmic buffer solution of boric
acid (pKa= 9.24) and sodium borate. To...
Calculate and formulate an ophthalmic buffer solution of boric acid (pKa=9.24) and sodium borate. To make...
Calculate and formulate an ophthalmic buffer solution of boric acid (pKa=9.24) and sodium borate. To make it pH 9.0 with buffer capacity of 0.02, the molar concentrations of boric acid should be ____mMol/L. And the molar concentration of and sodium borate should be ___mMol/L.
1. Calculate and formulate an ophthalmic buffer solution of boric acid (pKa=9.24) and sodium borate. To...
1. Calculate and formulate an ophthalmic buffer solution of boric acid (pKa=9.24) and sodium borate. To make it pH 9.0 with buffer capacity of 0.02, the molar concentrations of boric acid should be ____Mol/L. 2. And the molar concentration of and sodium borate should be ___Mol/L.
Calculate the pH of a 10-5 mol L-1 solution of boric acid. H3BO3 (pKa = 9.24)....
Calculate the pH of a 10-5 mol L-1 solution of boric acid. H3BO3 (pKa = 9.24). Solution: 6.90.
a. One desires to adjust a solution of pH 8.8 by the use of a boric...
a. One desires to adjust a solution of pH 8.8 by the use of a boric acid/sodium borate buffer. What approximate ration of acid and salt is required? pKa of boric acid = 9.24?
1. What is the pH of a buffer solution prepared with a 0.4 M sodium citrate...
1. What is the pH of a buffer solution prepared with a 0.4 M sodium citrate and 1% citric acid (pka for citric acid - 3.13, MW - 192 g/mol)? 8. A buffer solution is prepared using 0.4 mole of a weakly basic drug (pka - 10.1) and an unknown quantity of its salt. The final solution has a pH of 8.99. How much of the salt was used? 9. A buffer solution with a desired pH of 8.15 needs...
Consider a reaction mixture containing 100.0 mL of 0.100 M borate buffer at pH 5 pKa 5 9.24. At pH 5 pKa, we know that [...
Consider a reaction mixture containing 100.0 mL of 0.100 M borate buffer at pH 5 pKa 5 9.24. At pH 5 pKa, we know that [H3BO3] 5 [H2BO2 3 ] 5 0.050 0 M. Suppose that a chemical reaction whose pH we wish to control will be generating acid. To avoid changing the pH very much we do not want to generate more acid than would use up half of the [H2BO2 3 ]. How many moles of acid could...
pH of 9.2 using ammonium nitrate: pKa= 9.24 2 Introduiction The Henderson-Hasselbalch equation, or A-1 HAl relates the pH of a buffer with the pKo of the acid and the concentration of the conju...
pH
of 9.2
using ammonium nitrate: pKa= 9.24
2 Introduiction The Henderson-Hasselbalch equation, or A-1 HAl relates the pH of a buffer with the pKo of the acid and the concentration of the conjugate base A- and the monoprotic acid HA. In cq. (1), pH-_ log[H+], pK, =-log Ka, and [J]i and [JIe are the initial and equilibrium molar concentration of the Jth species, respectively. The buffering capacity of the buffer is given by [1] Ka H+ where K,e-1.0 ×...
Question 4. a.) Calculate the pH of a solution initially 0.1 M in acetic acid and 0.02 M in sodium acetate. The pKa for acetic acid is 4.76. b) Calculate the pH of the buffer if you add 10 ml of 0.1M...
Question 4. a.) Calculate the pH of a solution initially 0.1 M in acetic acid and 0.02 M in sodium acetate. The pKa for acetic acid is 4.76. b) Calculate the pH of the buffer if you add 10 ml of 0.1M HCl to 100 ml of the buffer in part a.
Determine the pH and pOH of a 0.250 L of a buffer that is 0.0210 M...
Determine the pH and pOH of a 0.250 L of a buffer that is 0.0210 M boric acid and 0.395 M sodium borate. pKa for B(OH)3=9.00 at 25C
A buffer contains 0.010 mol of lactic acid (pKa = 3.86) and 0.050 mol of sodium...
A buffer contains 0.010 mol of lactic acid (pKa = 3.86) and 0.050 mol of sodium lactate per liter. (a) Calculate the pH of the buffer. (b) Calculate the change in pH when 5.0 mL of 0.50 M HCl is added to 1.0 L of the buffer. (c) What pH change would you expect if you added the same quantity of HCl to 1.0 L of pure water?
1. What is the pH of a buffer solution prepared with a 0.4 M sodium citrate and 1% citric acid (pka for citric acid - 3.13, MW - 192 g/mol)? 8. A buffer solution is prepared using 0.4 mole of a weakly basic drug (pka - 10.1) and an unknown quantity of its salt. The final solution has a pH of 8.99. How much of the salt was used? 9. A buffer solution with a desired pH of 8.15 needs...
pH
of 9.2
using ammonium nitrate: pKa= 9.24
2 Introduiction The Henderson-Hasselbalch equation, or A-1 HAl relates the pH of a buffer with the pKo of the acid and the concentration of the conjugate base A- and the monoprotic acid HA. In cq. (1), pH-_ log[H+], pK, =-log Ka, and [J]i and [JIe are the initial and equilibrium molar concentration of the Jth species, respectively. The buffering capacity of the buffer is given by [1] Ka H+ where K,e-1.0 ×...
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