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?
Homework Answers
Add Answer to:
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 and 0.050 mol of sodium lactate per liter....
A buffer contains 0.010 mol of lactic acid and 0.050 mol of sodium lactate per liter. (a) calculate the pH of the buffer. (b) calculate the pH when 100ml of 0.02 M NaOH is added to 500mL of the buffer. (c) What pH would you expect if you added the same quantity of NaOH to 500mL of pure water?
A buffer contains 0.020 mol of lactic acid (pKa = 3.86) and 0.100 mol sodium lactate...
A buffer contains 0.020 mol of lactic acid (pKa = 3.86) and 0.100 mol sodium lactate per liter of aqueous solution. a. Calculate the pH of this buffer. b. Calculate the pH after 8.0 mL of 1.00 M NaOH is added to 1 liter of the buffer (assume the total volume will be 1008 mL).
anyone can help me with it...? biochemistry 2. A buffer contains 0.01 mole of lactic acid...
anyone can help me with it...? biochemistry
2. A buffer contains 0.01 mole of lactic acid (pKa-3.86) and 005 mole of sodium lactate per liter. (a) Calculate the pH of the buffer. (b) calculate the change in plH when 5 ml of 0.5 M HCl is added to 1L of the buffer. (c) what pll change would you expect if you added the same quantity of HCI to IL of pure water (8 points)?
4. What molar ratio of HPO4 2-to H2PO4-in solution would produce a pH of 7.0? Phosphoric...
4. What molar ratio of HPO4 2-to H2PO4-in solution would produce a pH of 7.0? Phosphoric acid (H3PO4), a triprotic acid, has 3 pKa values: 2.14, 6.86, and 12.4. Hint: Only one of the pKa values is relevant here. 5. For a weak acid with a pKaof 6.0, calculate the ratio of conjugate base to acid at a pH of 5.0. 6. Which of these compounds would be the best buffer at pH 5.0: formic acid (pKa 3.8), acetic acid...
A buffer contains 0.025 mol of acetic acid (pKa = 4.76) and 0.100 mol of sodium...
A buffer contains 0.025 mol of acetic acid (pKa = 4.76) and 0.100 mol of sodium acetate per liter. What is the pH, when 150 mL of 0.1M HCl is added to 1.0 L of the buffer. A. 5.09 CORRECT ANSWER B. 5.17 C. 4.76 D. 6.32 E. 2.18 Please show how A. is the correct answer
2.) Consider a 1.00L of buffer that is 0.139M in lactic acid (C3H5O3H) and 0.134M in sodium lactate (C3H5O3- Na+). Calcu...
2.) Consider a 1.00L of buffer that is 0.139M in lactic acid (C3H5O3H) and 0.134M in sodium lactate (C3H5O3- Na+). Calculate the pH of the buffer after adding 0.0500 mol of HCl into the buffer solution. (Assume no volume change) pKa of lactic acid is 3.86
Calculate the pH of a buffer solution prepared by mixing 75 mL of 1.0 M lactic...
Calculate the pH of a buffer solution prepared by mixing 75 mL of 1.0 M lactic acid and 25 mL of a 1.0M sodium lactate. (pka of lactic acid = 3.86) Calculate the change in pH that occurs when 0.01moles of OH are added to a 1L buffered solution that contains 0.5M acetic acid (HC_2H_3O_2) and 0.5M acetate ion (C_2H_3O_2). Acetic acid pka = 4.76.
The pH of a buffer prepared by mixing 0.05 mol of acetic acid (pKa=3.86) with 0.03...
The pH of a buffer prepared by mixing 0.05 mol of acetic acid (pKa=3.86) with 0.03 mol of sodium lactate per liter of aqueous solution is
What is the pH of a 1.00 L solution containing 0.295 M lactic acid, HC3H5O3 (pKa...
What is the pH of a 1.00 L solution containing 0.295 M lactic acid, HC3H5O3 (pKa = 3.86) and 0.295 M sodium lactate, NaC3H5O3, upon the addition of 0.055 mol HCl? Assume no significant volume change occurs.
1) Calculate the pH of the 1L buffer composed of 500 mL of 0.60 M acetic...
1) Calculate the pH of the 1L buffer composed of 500 mL of 0.60 M acetic acid plus 500 mL of 0.60 M sodium acetate, after 0.010 mol of HCl is added (Ka HC2H3O2 = 1.75 x 10-5). Report your answer to the hundredths place. 2) Calculate the pH of the 1L buffer composed of 500 mL 0.60 M acetic acid plus 500 mL of 0.60 M sodium acetate, after 0.010 mol of NaOH is added (Ka HC2H3O2 = 1.75...
anyone can help me with it...? biochemistry
2. A buffer contains 0.01 mole of lactic acid (pKa-3.86) and 005 mole of sodium lactate per liter. (a) Calculate the pH of the buffer. (b) calculate the change in plH when 5 ml of 0.5 M HCl is added to 1L of the buffer. (c) what pll change would you expect if you added the same quantity of HCI to IL of pure water (8 points)?
Calculate the pH of a buffer solution prepared by mixing 75 mL of 1.0 M lactic acid and 25 mL of a 1.0M sodium lactate. (pka of lactic acid = 3.86) Calculate the change in pH that occurs when 0.01moles of OH are added to a 1L buffered solution that contains 0.5M acetic acid (HC_2H_3O_2) and 0.5M acetate ion (C_2H_3O_2). Acetic acid pka = 4.76.
Most questions answered within 3 hours.
-
3) What are the typical social structures in a global city?
asked 2 hours ago -
Luther Corporation
Consolidated Balance Sheet
December 31, 2019 and 2018 (in $ millions)
Assets
2019
2018...
asked 2 hours ago -
(Expected rate of return and risk) Carter Inc. is evaluating a
security. Calculate the investment’s expected...
asked 5 hours ago -
What specific indicators can point to lack of progress for
African Americans in American society?
asked 6 hours ago -
1-The Electrons in a beam are moving at 2.7×108 m/s in an
electric field of 15000...
asked 6 hours ago -
A gas tank is a vertical cylinder. It has a radius of 1m, a
height of...
asked 6 hours ago -
Accent Software faces the following conditions. All of these
support Accent’s use of a market-penetration pricing...
asked 7 hours ago -
A mathematically inclined friend emails you the following
instructions: "Meet me in the cafeteria the first...
asked 7 hours ago -
A monopoly sells in two countries . The demand curves in the two
countries are p1...
asked 8 hours ago -
A .15kg rubber ball is bounced off a wall. Before hitting the
wall, the ball moves...
asked 9 hours ago -
A manufacturing company preparing to build a new plant is
considering three potential locations for it....
asked 9 hours ago -
B. If compound Y has approximately the same values of solubility
in toluene as compound X,...
asked 10 hours ago