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Buffer Solutions
Page 8
Questions (707)
A buffered solution is made by adding 75.0g sodium acetate to 500.0 mL of a .64 M solution of acetic acid. What is the pH of the
2 answers
asked by
Bob
823 views
Posted by Kat on Monday, March 2, 2009 at 11:21am.
A solution of volume 80.0 mL contains 16.0 mmol HCHO2 and 9.00 mmol NaCHO2. If
4 answers
asked by
Kat
550 views
The pKa of HEPES is 7.55 at 20C and it's MW is 238.31. Calculate the amounts of HEPES in grams and of 1.0M NaOH in ml that would
4 answers
asked by
~christina~
891 views
Thanks for answering the first one :)
Here is another Calculate the amount of sodium acetate and acetic acid necessary to make
2 answers
asked by
bugbabe623
1,007 views
Hi, I'm working out this question for homework, but i'm a little stuck.
How many g of sodium hydrogen carbonate (NaHCO3) and
3 answers
asked by
Norman
580 views
please tell me if i am correct
a buffer is made using HF and NaF-with a pH of 3.00. compute the ratio of the conjugate base F- to
2 answers
asked by
quentin
577 views
Could someone help me with this? i am tired of it.
here is my data from lab: Buffer1: HPO4- weight 3.412g; original pH Buffer 2:
1 answer
asked by
amanda
1,120 views
Find the grams of NaF added to 300ml of .2M HF to create a buffer with pH=3.5.
2 answers
asked by
corey
560 views
Here is the hint I received on how to solve those tough pH problems I posted earlier:
Both of these can be solved using the H-H
1 answer
asked by
ajones51
503 views
Hi everyone,
I have been trying to solve these two questions but am having trouble doing so and was wondering if someone could
1 answer
asked by
ajones51
455 views
Hi, I am asked to do this:
12. A buffer solution containing HBO32 –(aq) and BO33 –(aq) ions is used to standardize pH meters
1 answer
asked by
David
680 views
A 500 mL buffer solution is 0.1 M benzoic acid and 0.10 M in sodium benzoate and has an initial pH of 4.19. What is the pH of
3 answers
asked by
Nevaeh
4,629 views
How much 10.0 M HNO3 must be added to 1.00 L of a buffer that is 0.0100 M acetic acid and 0.100 M sodium acetate to reduce the
3 answers
asked by
Victoria
2,875 views
Of the following solutions, which has the greatest buffering capacity?
A) 0.821 M HF and 0.909 M NaF B) They are all buffer
3 answers
asked by
jes
2,695 views
Describe how to prepare 10 mL of 0.200 acetate buffer, pH 5.00, starting with pure acetic acid and solutions containg 3 M HCl
4 answers
asked by
Jillian King
2,474 views
1)A solution prepared by adding 0.400 mol of acetic acid (pKa = 4.74) and 0.400 mol of sodium acetate to 100.0 mL of water. The
2 answers
asked by
Maya
1,881 views
Prepare 500mL of a 0.200 M acetate buffer at pH 4.90 using only pure acetic acid, 3M NaOH, and water.
1) Add acetic acid to
3 answers
asked by
Ryn
1,856 views
Which of the following combinations will make a good buffer solution?
0.05 M H2CO3 + 0.05 M KHCO3 0.5 M HI + 0.5 M CsI 0.3 M
3 answers
asked by
Sarah
1,853 views
One liter of a buffer composed of 1.2 M HNO2 and 0.8 M NaNO2 is mixed with 400 mL of 0.5 M NaOH. What is the new pH? Assume the
4 answers
asked by
anon
1,735 views
What is the pH of a buffer system prepared by dissolving 10.70 grams of NH4Cl and 25.00 mL of 12 M NH3 in enough water to make
3 answers
asked by
emoni
1,728 views
Which of the following is true for a buffered solution?
The solution resists any change in its [OH-]. The solution will not
4 answers
asked by
Meep
1,665 views
A buffer is made by adding 0.300 mol HC2H3O2 and 0.300 mol NaC2H3O2 to enough water to make 1.00 L of solution. The pH of the
3 answers
asked by
Ericka
1,572 views
A buffer system contains 0.30 M NH4+ and 0.15 M NH3. pKa of NH4+ is 9.25. How many moles of NaOH must be added to 1.00 L of this
3 answers
asked by
Ally
1,547 views
A solution is prepared by dissolving 50.0 g of pure HC2H3O2 and 20.0 g of NaC2H3O2 in 975 mL of solution (the final volume).
what
4 answers
asked by
Bella
1,527 views
Given a solution of ammonium chloride. What additional reagent or reagents are added to prepare a buffer from the ammonium
4 answers
asked by
Ana
1,536 views
A buffer solution of volume 100.0 mL is 0.150 M Na2HPO4(aq) and 0.100 M KH2PO4(aq). Refer to table 1.
(a) What are the pH and the
5 answers
asked by
Trixie
1,495 views
If you need to prepare 250.0 mL of a pH 5.00 buffer that has a total buffer concentration of acetic acid + sodium acetate of
4 answers
asked by
Natalie
1,503 views
If a buffer solution is 0.190 M in a weak acid (Ka = 5.8 x 10^-5) and 0.550 M in its conjugate base, what is the pH?
What if it
4 answers
asked by
Katherine
1,420 views
Which of the following combinations will not result in the formation of a buffer solution?
a) Ethanoic acid–sodium acetate b)
4 answers
asked anonymously
56 views
What is the solubility of CaF2 in a buffer solution containing 0.45M formic acid and 0.20M sodium formate?
Given: Ka for formic
3 answers
asked by
Tina
1,431 views
A buffer solution made with NH3 and NH4Cl has a pH of 10.0. Which procedure(s) could
be used to lower the pH? 1. adding HCl 2.
1 answer
asked anonymously
69 views
Calculate the solubility of ZnCO3 in a buffer solution with a pH of 9.83 and Ksp of 1.2x10^-10
3 answers
asked by
Katy
1,428 views
If you need to prepare 250.0 mL of a pH 5.00 buffer tha
t has a total buffer concentration of acetic acid + sodium acetate of
2 answers
asked by
cody
1,342 views
A small amount of acid is added to a buffer solution. The pH of the solution will
A. increase. B. decrease. C. stay about the
2 answers
asked by
hipniblet
1,298 views
What molar ratio of acetic acid to sodium acetate is required to create a buffer solution at a pH of 4.89 at 25 degree C? Ka for
2 answers
asked by
Glen
1,310 views
Which of the following solution should be mixed with 50.0 mL of 0.050 M HF solution to make an effective buffer?
A) 50.0 mL of
4 answers
asked by
Anon
1,315 views
1)A buffer solution that is 0.10 M sodium acetate and 0.20 M acetic acid is prepared. Calculate the initial pH of this solution.
2 answers
asked by
JUNDY
1,307 views
Q1: You wish to prepare a buffer solution with pH = 11.10. What volume of 6.0 M HCl would you add to 500 mL of 0.10 M (C2H5)2NH
2 answers
asked by
Anonymous
1,254 views
1.)An ammonia/ammonium buffer solution contains 0.35 M NH3 and 0.72 M NH4+. The Kb value of ammonia is 1.8×10−5. Calculate
2 answers
asked by
LuigiR
1,244 views
Consider the following buffer equilibrium:
HF (high concentration) + H2O <--> H3O+ (low concentration) + F- ( high concentration)
2 answers
asked by
sh
1,250 views
If one added 130 mL of 2 M NaOH to 1 L of a buffer composed of 2.3 M NH3 and 3.2 M NH4Cl, what would be the pH of the resulting
2 answers
asked by
Anna
1,220 views
Buffers- Common Ion effect
IS this Correct Calculate the pH of a aqueous solution containing 0.15 M HNO2 and 0.20 M NaNO2 (aq).
2 answers
asked by
Saira
1,255 views
How would you prepare a 150.0mL of a 3.50 pH buffer solution using .500M NaOH and .500M HCOOH. I've gotten the base/acid ratio
2 answers
asked by
Israel
1,212 views
A buffer contains 5.00 M acetic acid and 5.00 M acetate anion. Gaseous HCl (0.010 mole) is added to 1.00 L of this buffer
2 answers
asked by
Ivana
1,220 views
A buffer solution is prepared by adding 14.37g of NaC2H3O2 and 16.00g of acetic acid to enough water to make 500mL of solution.
W
2 answers
asked by
Hannah
1,211 views
How do I calculate the amount of grams of Na2HPO4 and NaH2PO4 to prepare 200 mL of a buffer with an 8.25 pH so the sum of the
3 answers
asked by
Carrie
1,167 views
Calculate the volume of 1.00 M acetic acid solution and mass of sodium acetate needed to make 250 mL of a 0.450 M acetic
3 answers
asked by
eddie
1,176 views
Which of the following pairs of substances, when mixed in any proportion you wish, can be used to prepare a buffer solution?
2 answers
asked by
Rebekah
1,175 views
2. Determine the pH if 0.02 mol of HCl is added to 1.0 L of the buffer described in question #1
question1: 1. How many grams of
3 answers
asked by
KO
1,141 views
When 0.005 mol NaOH is added to 0.05 L of buffer solution (0.24 M NH3 and
0.20 M NH4Cl), what is the pH of the resulting
1 answer
asked anonymously
51 views
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