Homework Answers
![Ac 0:10 (B) (B) 0.66 no of moles of to = 0.66 THB] noi of moles of HB C32=0.66 [HB] Nolume and no of moles are directly propo](http://img.homeworklib.com/questions/085531c0-d541-11eb-b460-e960f8c877d4.png?x-oss-process=image/resize,w_560)
Add Answer to:
please help! will rate all.
solutions of the following compounds in your lab. HA (K =...
Which of these solutions would be the best choice for a pH 11.00 buffer? Ka Acid...
Which of these solutions would be the best choice for a pH 11.00 buffer? Ka Acid HA HB 7.59 x 10-4 1.26 x 10-6 7.94 x 10-9 1.32 x 10-11 HC HD O 1.0 MHC and 1.0 M NaC They are all equally good 1.0 M HD and 1.0 M NaD O 1.0 MHA and 1.0 M NaA 1.0 MHB and 1.0 M NaB
Solutions available 1.Acetic acid (CHCOH, K = 1.8 10) and sodium acetate (NaCHO). 2.Ammonium chloride (NHCl,...
Solutions available 1.Acetic acid (CHCOH, K = 1.8 10) and sodium acetate (NaCHO). 2.Ammonium chloride (NHCl, K for NH = 5.6 10) and ammonia (NH). (The buffer will be prepared by choosing the appropriate acid-base pair, calculating the molar ratio of acid to base that will produce the assigned pH, and then mixing the calculated amounts of the two compounds with enough deionized water to make 200. mL of buffer solution. A solution with approximately the same pH as...
Preparing Buffer Solutions: Calculating the Volume of Weak Base Needed Use the table of K values ...
Preparing Buffer Solutions: Calculating the Volume of Weak Base Needed Use the table of K values given with this problem to choose the best weak base to start from for making a buffer that holds the pH of the solution at 5.00. Make your selection so that you maximize the capacity of the buffer. Assume that you want to make 700 mL of a buffer and you have already added enough of the conjugate acid salt to make the final...
You wish to make a buffer solution using an acid (HA) with a Ka of 8.90 x 10-6 and a salt of its conjugate base (Na...
You wish to make a buffer solution using an acid (HA) with a Ka of 8.90 x 10-6 and a salt of its conjugate base (NaA). If you start with 1.50 MHA and 2.25 M NaA: what is the hydronium concentration at equilibrium? concentration: what is the pH? pH:
Buffers 1. Indicate which of the following pairs of compounds could be used to make a buffer solution by placing an X i...
Buffers 1. Indicate which of the following pairs of compounds could be used to make a buffer solution by placing an X in the appropriate column. Buffer Solution | Not a Buffer Solution Pair of Compounds HF and Cl H.COs and OH HNO2 and NO NHa and NH L 2. Write out the reaction of acetic acid CH.COOH reacting with water. 3. What is the pH of a buffer solution in which the (CH3COOH) is 0.229 M and the (CH...
can someone please help me out with questions 1-5, please To add more information this was...
can someone please help me out with questions 1-5, please
To add more information this was given to me for a lab that used
a weak acid and we added a strong base through titration. We just
observed how the ph changes. Later we then used a buffer with a
weak acid to see how buffers affect ph change. These questions are
basically surrounded around those topics to help us prepare.
However, I'm kinda confused about answering them because weak...
Preparing Buffer Solutions: Calculating the Number of Grams of Conjugate Base Needed Use the table of K values give...
Preparing Buffer Solutions: Calculating the Number of Grams of Conjugate Base Needed Use the table of K values given with this problem to choose the best weak acid to start from for making a buffer that holds the pH of the solution at 8.50. Make your selection so that you maximize the capacity of the buffer. Weak Acid K 1.8 X 10-5 6.5 X 10-5 1.5 X 10-5 You select a 800.0 ml volumetric flask to which you add 8.00...
hello, looking for guidance. needing help with completing the chart (#22) and finishing the following questions:...
hello, looking for guidance. needing help with completing the
chart (#22) and finishing the following questions:
(#24) which conjugate acid/base pair in the table above would
you use to prepare the following buffers?
(#25) which conjugate base/acid pair in the table above would
you use to prepare the following buffers? and
#22 Complete the following table. [3/box Compound Ка рКа кь pKb 37 2.3x10 6.25 x 10-5 Carbonic acid 4.3x 107 -.50 Phenol 1.x (O10 4.20 9.80 Hypoiodous acid 3.30...
Preparing Buffer Solutions: Calculating the Volume of Weak Base Needed Use the table of K values...
Preparing Buffer Solutions: Calculating the Volume of Weak Base Needed Use the table of K values given with this problem to choose the best weak base to start from for making a buffer that holds the pH of the solution at 9.70. Make your selection so that you maximize the capacity of the buffer. Assume that you want to make 100 mL of a buffer and you have already added enough of the conjugate acid salt to make the final...
I need help with a buffer equation. I am having a hard time answering the three...
I need help with a buffer equation. I am having a hard time
answering the three questions on here.
The pH is 7.40 and the concentration in M is 0.100. the total
volume in mL is 100.00. The pKa of H2PO4- is 7.21. The conjugate
acid and base to make the phosphate buffer are H2PO4- and
HPO4^2-
Equation (3) in the lab manual is pH = pKa + log (molesB /
molesA).
Equation (1) is [buffer] = Stot / L...
Which of these solutions would be the best choice for a pH 11.00 buffer? Ka Acid HA HB 7.59 x 10-4 1.26 x 10-6 7.94 x 10-9 1.32 x 10-11 HC HD O 1.0 MHC and 1.0 M NaC They are all equally good 1.0 M HD and 1.0 M NaD O 1.0 MHA and 1.0 M NaA 1.0 MHB and 1.0 M NaB
Preparing Buffer Solutions: Calculating the Volume of Weak Base Needed Use the table of K values given with this problem to choose the best weak base to start from for making a buffer that holds the pH of the solution at 5.00. Make your selection so that you maximize the capacity of the buffer. Assume that you want to make 700 mL of a buffer and you have already added enough of the conjugate acid salt to make the final...
You wish to make a buffer solution using an acid (HA) with a Ka of 8.90 x 10-6 and a salt of its conjugate base (NaA). If you start with 1.50 MHA and 2.25 M NaA: what is the hydronium concentration at equilibrium? concentration: what is the pH? pH:
Buffers 1. Indicate which of the following pairs of compounds could be used to make a buffer solution by placing an X in the appropriate column. Buffer Solution | Not a Buffer Solution Pair of Compounds HF and Cl H.COs and OH HNO2 and NO NHa and NH L 2. Write out the reaction of acetic acid CH.COOH reacting with water. 3. What is the pH of a buffer solution in which the (CH3COOH) is 0.229 M and the (CH...
can someone please help me out with questions 1-5, please
To add more information this was given to me for a lab that used
a weak acid and we added a strong base through titration. We just
observed how the ph changes. Later we then used a buffer with a
weak acid to see how buffers affect ph change. These questions are
basically surrounded around those topics to help us prepare.
However, I'm kinda confused about answering them because weak...
Preparing Buffer Solutions: Calculating the Number of Grams of Conjugate Base Needed Use the table of K values given with this problem to choose the best weak acid to start from for making a buffer that holds the pH of the solution at 8.50. Make your selection so that you maximize the capacity of the buffer. Weak Acid K 1.8 X 10-5 6.5 X 10-5 1.5 X 10-5 You select a 800.0 ml volumetric flask to which you add 8.00...
hello, looking for guidance. needing help with completing the
chart (#22) and finishing the following questions:
(#24) which conjugate acid/base pair in the table above would
you use to prepare the following buffers?
(#25) which conjugate base/acid pair in the table above would
you use to prepare the following buffers? and
#22 Complete the following table. [3/box Compound Ка рКа кь pKb 37 2.3x10 6.25 x 10-5 Carbonic acid 4.3x 107 -.50 Phenol 1.x (O10 4.20 9.80 Hypoiodous acid 3.30...
Preparing Buffer Solutions: Calculating the Volume of Weak Base Needed Use the table of K values given with this problem to choose the best weak base to start from for making a buffer that holds the pH of the solution at 9.70. Make your selection so that you maximize the capacity of the buffer. Assume that you want to make 100 mL of a buffer and you have already added enough of the conjugate acid salt to make the final...
I need help with a buffer equation. I am having a hard time
answering the three questions on here.
The pH is 7.40 and the concentration in M is 0.100. the total
volume in mL is 100.00. The pKa of H2PO4- is 7.21. The conjugate
acid and base to make the phosphate buffer are H2PO4- and
HPO4^2-
Equation (3) in the lab manual is pH = pKa + log (molesB /
molesA).
Equation (1) is [buffer] = Stot / L...
Most questions answered within 3 hours.
-
Wildhorse Company follows the practice of pricing its inventory
at the lower-of-cost-or-market, on an individual-item
basis....
asked 33 minutes ago -
3. (10 pts) You grow a corn crop that yields 150 bushels ac-1,
with the following...
asked 22 minutes ago -
7. The term Six Sigma refers to:
Select one:
a. The control limits established in a...
asked 31 minutes ago -
For the following reaction: A(g) + 2 B(g) ⇌ 2 C(g) Calculate the
equilibrium constant K...
asked 33 minutes ago -
Which of the following best describes tidal volume? options:
1.The amount of oxygen in the air...
asked 50 minutes ago -
1. Smaller cost distortions occur when the traditional systems'
single indirect-cost rate and the activity-cost-driver rates:...
asked 58 minutes ago -
Using either a FMECA approach or some other appropriate RCA
tool, identify five risk treatment actions...
asked 58 minutes ago -
If for a test the P-value is between 0.0025 and 0.005, what
conclusion can you draw?...
asked 1 hour ago -
Using Python. Write a function clean2(aList) that takes a list
of integers aList as argument, and...
asked 1 hour ago -
Intrapreneurship is defined as the
development of an enterprise culture with an existing (Nandan,
2009). An...
asked 1 hour ago -
QUESTION 1 Tamiflu is a drug used to treat influenza. A study
found that Tamiflu reduced...
asked 1 hour ago -
Which of the following would be less likely to be used to
allocate factory overhead when...
asked 1 hour ago