A buffer solution is prepared by mixing 23.6 mL of 0.398 M sodium dihydrogen citrate with...
Determine the pH (to two decimal places) of a solution prepared by adding 239 mL of 0.750 M sodium dihydrogen citrate (NaC3H5O(COOH)2COO) to 3.99 g of sodium hydrogen citrate (Na2C3H5O(COOH)(COO)2). Assume the volume of the solution does not change and that the 5% approximation is valid. pKa=4.77
1. Determine the pH of the buffer solution that is prepared by mixing 136 mL of 0.0623 M MOPSO-H (C7H15NO5S) to 798 mL of 0.155 M MOPSO (C7H14NO5S) Assume the 5% approximation is valid Report your answer to 2 decimal places. OH SO3 MOPSO-H The pKa of MOPSO-H is 6.90
A buffer solution is prepared by mixing 15.5 mL of 0.0229 M pyridinium chloride with 73.8 mL of 0.888 M pyridine. A table of pKa values can be found here. 1. Calculate the pH (to two decimal places) of this solution. Assume the 5% approximation is valid and that the volumes are additive. Tries 0/13 2. Calculate the pH (to two decimal places) of the buffer solution after the addition of 8.26 g of pyridine (C5H5N) to the buffer solution...
Determine the pH of the solution (to 2 decimal points) after the addition of 73.3 mL of 0.0154 M perchloric acid (HClO4) to 975 mL of 0.0517 M sodium hydrogen citrate (Na2C3H5O(COOH)(COO)2). Assume that the volumes are additive and that the 5% approximation is valid. A table of pKa values can be found here.
What is the pH of a buffer solution prepared with a 0.5 M sodium citrate and 1% citric acid (pKa for citric acid = 3.13, MW = 192 g/mole).
calculate the pH of the buffer that results from mixing 51.5 mL of a 0.398 M solution of HCHO2 and 11.5 mL of a 0.605 M solution of NaCHO2. the Ka value for HCHO2 is 1.8 x 10^-4
A buffer solution is prepared by mixing 78.0 mL of 0.279 M fluorobenzoic acid (C7H5O2F) with 50.0 mL of 0.476 M sodium fluorobenzoate. The pKa of this weak acid is 2.90. What is the pH of the buffer solution? (with correct sig figs)
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...
Calculate pH when: solution prepared by mixing 112.0mL of 1.3x10^-3 M HCL and 444.0 mL of M HClO4 (assume that volumes are additive) Solution prepared by mixing 1120 mL of 1.3 10-3 M HCl and 444.0 mL of 1.0-103 MHCIO, (Assume that volumes are additive ) Express your answer using two decimal places. pH- Submt Request Answer ide Feedback
A solution is prepared by mixing 150 mL of a 0.180 M tris solution with 200 mL of a 0.150 M Tris hydrochloride solution. The pKa for TrisH+ is 8.07. What is its pH (report to hundredth decimal place)? (5 pts) B. If 7.34 mL of 0.881 M NaOH is added, what is the pH after equilibration? (6 pts)