Option D is correct.
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Calculate the final pH of a solution made by the addition of 20 ml of 30...
If 10 µmol acetic acid is generated in a 1-ml enzyme-catalyzed reaction buffered by 60 mM Naphosphate (pH 7.21), what is the final pH of the solution? For phosphoric acid, pKa1 = 2.12, pKa2 = 7.21, pKa3 = 12.32; for acetic acid, pKa = 4.76.
How you would prepare a solution of 250.0 mL of a 0.150M phosphate buffer at ph=7. (phosphoric acid pka1=2.12, pka2=7.21, pka3=12.32). What would the pH of the buffer be if 5.00mL of 1.10M HCL was added to 100mL sample of the prepared buffer.
What concentration of HCl will have a pH of 5.0? b) What concentration of acetic acid will have a pH of 5.0? (For acetic acid, pKa=4.76) c) What concentration of phosphoric acid will have a pH of 5.0? (For H3PO4, pKa1 = 2.12, pKa2 = 7.21, pKa3 =12.32) d) What is the pH of a 10 mM solution of phosphoric acid? e) How much 1.0 M NaOH must be added to 100 ml of 10 mM H3PO4 to raise the...
A buffer solution is made by adding 75.52 mL of 1.00 M phosphoric acid (H3PO4, pKa = 2.12) with 10.00 mL of 1.00 M sodium dihydrogen phosphate (NaH2PO4, pKa = 7.21). What is the pH of the buffer solution?
Calculate the thoeretical pH of Solution B (10mL of 0.2M acetic acid and 10 mL of 0.1M sodium hydroxide). Then calculate the theoretical pH after an addition of 1 mL of 0.0992M of HCl. Initial pH: 4.66, pH after addition of acid: 4.66 Calculate the theoretical pH of solution B (10 mL of 0.2M sodium acetate and 10 mL of 0.1M HCl). Then calculate the theoretical pH after an additon of 1 mL of 0.997M of NaOH. Initial pH: 4.81,...
Calculate (to two decimal places) the final pH of the solution obtained by mixing 5.00 mL of 2.50 M NaOH with 650 mL of 300 mM acetate buffer that is initially at pH = 5.00. For acetic acid pKa = 4.76.
1 . If a buffer solution is 0.260 M in a weak acid (?a=8.3×10−5)and 0.480 M in its conjugate base, what is the pH? pH= 2. If a buffer solution is 0.200 M in a weak base (?b=5.0×10−5) and 0.530 M in its conjugate acid, what is the ph 3. Phosphoric acid is a triprotic acid (?a1=6.9×10−3, ?a2=6.2×10−8 , and ?a3=4.8×10−13 To find the pH of a buffer composed of H2PO4 - (aq) ) and HPO4 2− (aq) , which...
Calculate the hypothetical pH AFTER addition of 15.00 mL of reagent for the titration of 50.00 mL of 0.0800 M NaOH with 0.1000 M HCl at 25°C. QUESTION 7 10 poir Calculate the hypothetical pH AFTER addition of 40.00 mL of reagent for the titration of 50.00 mL of 0.0800 M NaOH with 0.1000 M HCl at 25°C. Calculate the hypothetical pH AFTER addition of 46.00 mL of reagent for the titration of 50.00 mL of 0.0800 M NaOH with...
What is the pH of 80 mL of a 0.4 mol/L NaOH solution after the addition of 20 mL of a 0.5 mol/L solution of HCl? 4. What is the pH of 80 mL of a 0.4 mol/L NaOH solution after the addition of 20 mL of a 0.5 mol/L solution of HCI?
Calculate pH of 0.2 M solution of Tartaric acid. Calculate the volume of 1 M solution of NaOH required to neutralize 20 mL of 0.2 M tartaric acid solution (final pH should be 7). (pKa's of Tartaric acid are 3.0 and 4.4). 3.