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7. You need to make a buffer to keep a solution at...
7. You need to make a buffer to keep a solution at a pH of 2.50....
7. You need to make a buffer to keep a solution at a pH of 2.50. You have several combinations of weak acids and their conjugate bases to choose from. 1. Chloroacetic acid (K. = 1.40 x 10") and sodium chloroacetate 2. Formic acid (K= 1.77 x 104) and sodium formate 3. Iodic acid (K-1.60 x 10-') and sodium iodate 4. Phosphoric acid (K, = 7.52 x 10%) and sodium phosphate 5. Propionic acid (K, - 1.34 x 10 %)...
Determine which weak acid is the best option to make a buffer at the specified pH...
Determine which weak acid is the best option to make a buffer at the specified pH of 3.00. ***formic acid, ?a=1.77×10−4, 2.00 M propionic acid, ?a=1.34×10−5, 3.00 M phosphoric acid, ?a=7.52×10−3, 1.00 M acetic acid, ?a=1.75×10−5, 5.00 M Determine which conjugate base is the best option to make a buffer at the specified pH. sodium dihydrogen phosphate monohydrate, NaH2PO4⋅H2O ***sodium formate, HCOONa sodium acetate trihydrate, CH3COONa⋅3H2O sodium propionate, CH3CH2COONa The final volume of buffer solution must be 100.00 mL and...
A student must make a buffer solution with a pH of 1.50. Determine which weak acid...
A student must make a buffer solution with a pH of 1.50. Determine which weak acid is the best option to make a buffer at the specified pH. O propionic acid, Ka = 1.34 x 10-5, 3.00 M formic acid, Ka = 1.77 x 10-4, 2.00 M O acetic acid, Ka = 1.75 x 10-5,5.00 M O sodium bisulfate monohydrate, Ka = 1.20 x 10-2, 3.00 M Determine which conjugate base is the best option to make a buffer at...
A student must make a buffer solution with a pH of 1.00. Determine which weak acid...
A student must make a buffer solution with a pH of 1.00. Determine which weak acid is the best option to make a buffer at the specified pH. O propionic acid, K =1.34 x 10 5,3.00 M acetic acid, Ka = 1.75 x 10,5.00 M O formic acid, Kg = 1.77 x 104,2.00 M sodium bisulfate monohydrate, K = 1.20 x 102,3.00 M Determine which conjugate base is the best option to make a buffer at the specified pH. sodium...
A student must make a buffer solution with a pH of 1.00, Determine which weak acid...
A student must make a buffer solution with a pH of 1.00, Determine which weak acid is the best option to make a buffer at the specified pH. propionic acid, Kg =1.34 x 10,3.00 M acetic acid, Kg = 1.75 x 105,5.00 M formic acid, Kg = 1.77 x 104, 2.00 M sodium bisulfate monohydrate, K = 1.20 x 10,3.00 M Determine which conjugate base is the best option to make a buffer at the specified pH. sodium sulfate decahydrate,...
A student must make a buffer solution with a pH of 2.00. Determine which weak acid...
A student must make a buffer solution with a pH of 2.00. Determine which weak acid is the best option to make a buffer at the specified pH. O propionic acid, K = 1.34 x 10-6, 3.00 M O sodium bisulfate monohydrate, K = 1.20 x 10,3.00 M acetic acid, K, = 1.75 x 10-6, 5.00 M formic acid, K, = 1.77 x 10 , 2.00 M Determine which conjugate base is the best option to make a buffer at...
Question 36 0/3 poir Calculate the pH of a 0.240 M solution of sodium propionate; NaOCH2CH3...
Question 36 0/3 poir Calculate the pH of a 0.240 M solution of sodium propionate; NaOCH2CH3 ( Ka for propionic acid, HOCH2CH3, is 1.34 x 10-6) (Hint: This is the conjugate salt of a weak acid) Answer: 9.62
PLEASE COMPLETE ALL ANSWER. SHOW ALL WORK. For questions 10 and 11. You need a buffer...
PLEASE COMPLETE ALL ANSWER. SHOW ALL WORK.
For questions 10 and 11. You need a buffer with a pH of 3.50 for a certain experiment. You decide to prepare this buffer using formic acid, CHO2H,(Ka =1.8 x 104) and sodium formate, NaCHO2. The concentration of formic acid, CHO2H, in this buffer is 0.150M. 10. (10 pts) Calculate the concentration of formate, CHO2. Report 2 significant figures. Show work. 11. (5 pts) How many grams of formic acid (46.03 g/mol) should...
You combine 0.75 moles formate and 0.85 moles formic acid to make a buffer solution. The...
You combine 0.75 moles formate and 0.85 moles formic acid to make a buffer solution. The Ka of formic acid is 1.8xl0'4 what is the pH of the solution? With the same initial solution of 0.75 moles formate and 0.85 moles formic acid to make a buffer solution. The Ka of formic acid is 1.8xl0'4. You add 8g sodium hydroxide to this solution, what is the new pH? With the same initial solution of 0.75 moles formate and 0.85 moles...
b. To 1.200 liters of the buffer in part a, you add 3.75 mL of 2.500...
b. To 1.200 liters of the buffer in part a, you add 3.75 mL of 2.500 M barium hydroxide. What is the pH after that addition? Yes, you may use the H-H equation here. For your convenience, the buffer is 0.125 M formic acid (?a = 1.77 x 10!!) and 0.140 M sodium formate. (8 pts.) The previous question it is referring too is a buffer of 0.125 M formic acid Ka=1.77X 10^-4 and 0.140 M sodium formate. with a...
7. You need to make a buffer to keep a solution at a pH of 2.50. You have several combinations of weak acids and their conjugate bases to choose from. 1. Chloroacetic acid (K. = 1.40 x 10") and sodium chloroacetate 2. Formic acid (K= 1.77 x 104) and sodium formate 3. Iodic acid (K-1.60 x 10-') and sodium iodate 4. Phosphoric acid (K, = 7.52 x 10%) and sodium phosphate 5. Propionic acid (K, - 1.34 x 10 %)...
A student must make a buffer solution with a pH of 1.50. Determine which weak acid is the best option to make a buffer at the specified pH. O propionic acid, Ka = 1.34 x 10-5, 3.00 M formic acid, Ka = 1.77 x 10-4, 2.00 M O acetic acid, Ka = 1.75 x 10-5,5.00 M O sodium bisulfate monohydrate, Ka = 1.20 x 10-2, 3.00 M Determine which conjugate base is the best option to make a buffer at...
A student must make a buffer solution with a pH of 1.00. Determine which weak acid is the best option to make a buffer at the specified pH. O propionic acid, K =1.34 x 10 5,3.00 M acetic acid, Ka = 1.75 x 10,5.00 M O formic acid, Kg = 1.77 x 104,2.00 M sodium bisulfate monohydrate, K = 1.20 x 102,3.00 M Determine which conjugate base is the best option to make a buffer at the specified pH. sodium...
A student must make a buffer solution with a pH of 1.00, Determine which weak acid is the best option to make a buffer at the specified pH. propionic acid, Kg =1.34 x 10,3.00 M acetic acid, Kg = 1.75 x 105,5.00 M formic acid, Kg = 1.77 x 104, 2.00 M sodium bisulfate monohydrate, K = 1.20 x 10,3.00 M Determine which conjugate base is the best option to make a buffer at the specified pH. sodium sulfate decahydrate,...
A student must make a buffer solution with a pH of 2.00. Determine which weak acid is the best option to make a buffer at the specified pH. O propionic acid, K = 1.34 x 10-6, 3.00 M O sodium bisulfate monohydrate, K = 1.20 x 10,3.00 M acetic acid, K, = 1.75 x 10-6, 5.00 M formic acid, K, = 1.77 x 10 , 2.00 M Determine which conjugate base is the best option to make a buffer at...
Question 36 0/3 poir Calculate the pH of a 0.240 M solution of sodium propionate; NaOCH2CH3 ( Ka for propionic acid, HOCH2CH3, is 1.34 x 10-6) (Hint: This is the conjugate salt of a weak acid) Answer: 9.62
PLEASE COMPLETE ALL ANSWER. SHOW ALL WORK.
For questions 10 and 11. You need a buffer with a pH of 3.50 for a certain experiment. You decide to prepare this buffer using formic acid, CHO2H,(Ka =1.8 x 104) and sodium formate, NaCHO2. The concentration of formic acid, CHO2H, in this buffer is 0.150M. 10. (10 pts) Calculate the concentration of formate, CHO2. Report 2 significant figures. Show work. 11. (5 pts) How many grams of formic acid (46.03 g/mol) should...
You combine 0.75 moles formate and 0.85 moles formic acid to make a buffer solution. The Ka of formic acid is 1.8xl0'4 what is the pH of the solution? With the same initial solution of 0.75 moles formate and 0.85 moles formic acid to make a buffer solution. The Ka of formic acid is 1.8xl0'4. You add 8g sodium hydroxide to this solution, what is the new pH? With the same initial solution of 0.75 moles formate and 0.85 moles...
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