Calculate the pH of a phosphate bufferthat is prepared by adding 16.1 mL of50.0 mM NaH2PO4 to 19.4 mL of 50.0mM Na2HPO4? The pKa of H2PO4- =6.82=Henderson-Hasselbalch equation -please show work! thank you!!QUESTION 4Calculate the pH of a phosphate buffer that is prepared by adding 16.1 ml of 50.0 mM NaH2PO4 to 19.4 ml of 50.0 mM Na2HPO4? The pKa of H₂PO4-6.82QUESTION 5

Answer: Buffer solution is the type of solution that resists the change in its pH on adding small…

Answered: Calculate the pH of a phosphate buffer…

Calculate the pH of a phosphate buffer that is prepared by adding 16.1 mL of 50.0 mM NaH2PO4 to 19.4 mL of 50.0 mM Na2HPO4? The pKa of H2PO4- = 6.82

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

See similar textbooks

Related questions

Q: Calculate the pH at 25°C of 290.0 mL of a buffer solution that is 0.310 M NH4Cl and 0.310 M NH3…

Q: What is the pH of a buffer that is composed of 121 mL of 0.10 M CH3COOH and 81 mL of 0.10 M…

Q: buffer solution prepared wi a of boric acid is 9.24 at 25

Q: What is the pKa of a 0.2M solution of an unknown monoprotic acid that has a pH of 4.2?

A: We have find out Pka of solution of an unknown monoprotic acid that has a pH of 4.2

Q: f 27.7 mL of 0.102 M acid with a pK₂ of 5.14 is titrated with 0.108 M NaOH solution, what is the pH…

Q: How many grams of acid are needed to prepare a 0.1 M 100 mL phosphate buffer solution with a pH of…

A: We need to prepare phosphate buffer solution with a pH of 7.4

Q: A student needs to prepare a buffer solution with a pH of 5.73. Assuming a pKa of 4.06, how many mL…

A: Given,Molarity of NaOH = 0.1 MMolarity of acid ( HB ) = 0.1 Mvolume of HB = 15.0 mLpH of the buffer…

Q: Cacodylic acid (dimethylarsinic acid, HASO₂ (CH3)2) is a common buffer used in biology to prepare…

A: The question is based on the concept of the pH of the solution.It is defined as a negative logarithm…

Q: A student needs to prepare a buffer solution with a pH of 5.59. Assuming a pKa of 4.99, how many mL…

A: Answer:Buffer solution is a type of solution that resists the change in its pH on adding small…

Q: buffer

Q: What is the pH change of a 0.210 M solution of benzoic acid (pka = 4.19) if 0.145 M benzoate is…

Q: Which

A: Those solution when resist to change the pH when small amount of acid or base added on it's then…

Q: If an acetic acid (CH3COOH)/sodium acetate (CH3COONa) buffer solution is prepared from 100 mL of…

A: Given : concentration of acetic acid = 0.1 M = concentration of sodium acetate And volume of acetic…

Q: What is the percent of the protonated species in HA/A- buffer at pH 10? pKa of HA = 9.20

A: Answer :---- Given :-pH = 10pKa = 9.20The Henderson-Hasselbalch equation is :--pH = pKa +…

Q: Suppose you have a buffer, comprised of 0.350 mol of weak base and 0.250 mol of weak acid. Ifthe pH…

A: The of a buffer solution can be calculated using Henderson Hasselbalch Equation written as follows:…

Q: What will be the pH of a buffer solution containing an acid with a pKa of 5.4 with an acid…

A: We have to predict the pH of buffer solution.

Q: Calculate the pH of buffer system with 0.25 M C6H5NH3 and 0.31 M C6H5NH3+.Ka of anilinium ion = 2.5…

Q: Calculate the change in pH after adding 0.25 mol of hydrochloric acid to a liter of a buffer…

A: As per the guidelines, I am solving the first question for you. Kindly repost the second question.…

Q: Suppose you wanted to make a buffer of exactly pHpH 7.00 using KH2PO4KH2PO4 and Na2HPO4Na2HPO4. If…

A: Henderson – Hasselbalch equation can be used here, i.e pH=pKₐ+log₁₀([A⁻]/[HA])

Q: What is the pH of the buffer that occurs when 7.00 Mol of H2SO4 and 4.0 Mol of NaOH are diluted with…

A: A buffer solution generally consists of a weak acid and its salt. Buffer solution resists the change…

Q: If 30 mL of 0.50 M OH- is added to 200 mLs of a 1.5 M buffer (pH 7.4), what is the resulting pH in…

Q: Which of the following combination can be used to prepare a buffer with a pH of 3? NaH2PO4 and…

Q: You wish to prepare an HC2 H3 O2 buffer with a pH of 4.14. If the pKa of HC2H3 O2 is 4.74, what…

A: Given :- pH of buffer solution = 4.14 pKa value for HC2H3O2 = 4.74 To calculate :- Ratio of…

Q: Lactate is an important component in some intravenous solutions. Given pKa = 3.86 for lactic acid,…

A: pH = pKa + log ( [ conjugate base ]/[weak acid] ) ---------(i) pKa = 3.86 ( given) HC3H5O3…

Q: What will be the pH of a solution when 200ml of 0.1M HEPES in the basic form and 100mL of 0.1 M…

A: Given: Concentration of Base = 0.1 M volume = 200 mL = 0.2 L concentration of acid = 0.1 M volume =…

Q: None

A: The mixture forms a buffer, which is made up of a weak acid (or base) is mixed with its conjugate…

Q: How many grams of sodium acetate, NaC2H302, would have to be added to 1.0 L of 0.85 M acetic acid…

Q: How much (in grams) Na2HPO4 must be added to 100 mL 1.0 M NaH2PO4 solution to prepare a buffer…

Q: Calculate the pH of a buffer prepared by adding 10mL of 0.10 M acetic acid to 20mL of 0.10 M sodium…

A: When a weak acid and its conjugate base (vice versa) are mixed together in the aqueous medium, the…

Q: What is the pH of a solution made from adding 10.00 mL of 0.15 M Na₂HASO4 to 25.00 mL of 0.10 M…

A: volme of Na2HAsO4=10.00 mLconcentration of Na2HAsO4=0.15 Mvolume of NaH2AsO4 =25.00 mLconcentration…

Q: In the titration of 100.0 mL of 0.050 M CH3COOH (pKa = 4.74) solution, what will be the pH after…

A: Given, The titration of 100.0 mL of 0.050 M CH3COOH (pKa = 4.74) with 10.0 mL of a 0.10 M NaOH…

Q: An enzyme-catalyzed reaction was carried out in 5.0 mL of 0.15 M phosphate buffer pH 7.2. As a…

A: Given: Volume of solution = 5.0 mL = 0.005 L (Since 1 L = 1000 mL)…

Q: Calculate the pH of a buffer system containing 2.0 M CH3COOH and 2.0 M CH3COOK.The pKa of CH3COOH is…

A: Concentration of CH3COOH=2.0M Concentration of CH3COOH=2.0M pKa of CH3COOH=4.74

Q: What is the pH of buffer prepared by mixing 250 mL of 0.2 M benzoic acid and 100 mL of 0.25 M sodium…

A: PH of buffer solution is calculated by using Henderson Hassel balch equation

Q: What is the ratio of HEPES/HEPES-H+ in aHEPES buffer at pH 7.9?

Q: Which of the following is the most effective buffer system for a pH value of 5.50? (a)…

A: (a) HC3H5O2/C3H5O2- Ka = 1.34x10-5(b) HC2O4−/C2O42- Ka = 5.42x10-5(c) HNO2/NO2- Ka = 7.10x10-4(d)…

Q: What is the pH of a buffer solution made by adding 0.15 mole of lactic acid HC3H5O3 and 0.12 mole…

A: Value of pH of a solution is used to tell whether the solution is acidic or basic in nature. At room…

Q: the titration of 100.0 mL of 0.050 M CH3COOH (pKa = 4.74) solution, what will be the pH after adding…

Q: Cacodylic acid (dimethylarsinic acid, HASO2(CH3)2) is a common buffer used in biology to prepare and…

Q: You wish to make a buffer of 500 mL at 0.1 M sodium phosphate at pH 6.5. If the molecular weight of…

A: Buffer is a solution that resists the change in its pH when small amount of acid or base is added to…

Q: acid is 3.75. Calculate the pH of the buffer when (a) when 40 mL 5 M HCI was added to the buffer (b)…

A: The reaction is;Volume is given as 1 L

Q: Calculate the pH of a buffer prepared by dissolving 0.80 moles acetic acid (CH3COOH) and 0.40 moles…

A: pH of acidic Buffer solution is calculated Handerson equation that is pH = pKa +…

Q: Calculate the pH of a buffer prepared from 0.85 mols of formic acid and 0.25 moles of sodium formate…

A: Moles of formic acid Moles of sodium formateVolume of water

Q: What is the pH number of a buffer solution prepared from 0.05 M ammonium hydroxide (NH4OH) and 0.09…

A: The Given solution is a Basic buffer solution.

Q: Calculate the pH of a buffer solution containing 0.58 moles of sodium acetate (NaC2H3O2) and 0.43…

A: The detailed explanation is provided below.

Concept explainers

Acid Base Titration

An acid-base titration is the method of quantitative analysis for determining the concentration of an acid and base by exactly neutralizing it with a standard solution of base or acid having known concentration.

Question

Calculate the pH of a phosphate buffer
that is prepared by adding 16.1 mL of
50.0 mM NaH2PO4 to 19.4 mL of 50.0
mM Na2HPO4? The pKa of H2PO4- =
6.82
=
Henderson-Hasselbalch equation -
please show work! thank you!!
QUESTION 4
Calculate the pH of a phosphate buffer that is prepared by adding 16.1 ml of 50.0 mM NaH2PO4 to 19.4 ml of 50.0 mM Na2HPO4? The pKa of H₂PO4-6.82
QUESTION 5

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

Step 2

Step 3

Step 4

Trending now

This is a popular solution!

Step by step

Solved in 4 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.

Similar questions

Piperazine can be used as an anthelmintic (a drug that expels parasitic worms from the body). It is a dibasic compound and has 2 pKb’s as shown below: Consider the titration of 50.00 mL of 0.05000 M piperazine is titrated with 0.1250 M HCl. What is the pH after 40.00 mL of HCl have been added?
7
What is the pH of a buffer solution made of .50 M CH3CO2H and .36 M NaCH3CO2? pka= 4.7 for CH3CO2H
How would you prepare 10.0ml of a buffer with a concentration of 0.0100 mol/L, and pH 7.40, starting with the following solutions: KH2PO4 0.100 mol/L (pKa = 7.20) K2HPO4 0.250 mol/L
The addition of 40.0 mL of HCl to 1 L of 0.5 M phosphate buffer changes the pH from 7.5 to 6.8. What's the molarity of the HCl solution? Phosphoric acid pKas are 2.15, 7.2, 12.4
2
Calculate the sodium acetate/acetic acid ratio to prepare a buffered solution with a pH of 5.06. (pKa = 4.76)
What volume, in milliliters, of 0.180 M NaOH should be added to a 0.140 L solution of 0.029 M glycine hydrochloride (p Kal = 2.350, pK₁2 = 9.778) to adjust the pH to 2.50? NaOH volume = mL
The pK₂ value for HCN is 9.40. Would a buffer prepared from HCN and NaCN with a pH of 7.60 be considered to be an effective buffer? A buffer in which the mole ratio of NaCN to HCN is 2.0 has a pH of 9.71. Would this buffer solution have a greater capacity for added acid ( H3O+) or added base (OH)?
pKb = 4.47x10-4
A compound has an ionisable groups with a pKa of 2.6. A 200 mL volume of a 0.15 M solution of this compound had an initial pH 2.4. The concentration of the conjugate acid in the initial buffer was 0.092 M. The concentration of the conjugate base in the initial buffer was 0.058 M. What is the final pH of the buffer AFTER you added 5 mL of 1 M NaOH?
A 100 mL buffer solution that is pH 8.06 buffer is prepared by first adding 0.45 grams of RNH2 (121.1 g/mole) into a beaker. To make the solution, how many mL of a stock solution of 1.0 M R-NH3+ solution should be added to the beaker before diluting to 100 mL?