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Buffer Solutions
Page 10
Questions (707)
What is the pH of a buffer solution of 0.125M Acetic acid and 0.250M Sodium acetate? the Pk of Acetic acid is 4.76
4 answers
asked by
Gordon
813 views
What mass of sodium benzoate should be added to 160.0mL of a 0.17M benzoic acid solution in order to obtain a buffer with a pH
3 answers
asked by
Madison
790 views
12 mL of 0.0100 M HCl are added to 25.0 mL of a buffer solution that is 0.010 M HC2H3O2 and 0.11 M C2H3O2-. What is the pH of
2 answers
asked by
Lil
799 views
a 250.0ml buffer solution is 0.250M in ascetic acid and 0.250M in sodium acetate.
B). What is pH after addition of 0.0050mol of
2 answers
asked by
ALISON
804 views
A beaker with 120mL of an acetic acid buffer with a pH of 5.00 is sitting on a benchtop. The total molarity of acid and
2 answers
asked by
pablo
805 views
You have to prepare a pH 3.50 buffer and you have .10M HCOOH and .10M HCOONa, how many milliliters of each solution do you neeed
2 answers
asked by
Anonymous
800 views
acetic acid has a pka of 4.8 how many ml of 0.1M acetic acid and 0.1M sodium acetate are required to prepare 1L of 0.1M buffer
1 answer
asked by
ruth
775 views
How much Tris-Acetate-EDTA (TAE) stock buffer (3.25 M) is required to make 400 ml of
solution that has a concentrations of 250
1 answer
asked by
Abass
790 views
Explain clearly which out of the following combinations of solutes would result in the formation of a buffer solution?
A) NH3 and
4 answers
asked by
Jill
814 views
Consider a room temperature 0.30M ammonia buffer at pH 9.5. As you raise the temperature of the buffer, would you expect the pH
2 answers
asked by
julie
757 views
Calculate z pH of a buffer solun containing o.1 M acetic acid & 0.1 M solun of sodiumacetate when 1 mL of 0.1M HCl is added to
2 answers
asked by
Ethio
776 views
Calculate the change in pH if 0.050 g of solid NaOH is added to 250 mL of a buffer solution that contains 0.80 M NaH2PO4 and
1 answer
asked by
Matt
771 views
A buffer consists of 0.14 M KHCO3 and 0.61 M K2CO3. Carbonic acid is a dirpotic acid with Ka1= 4.5*10^-7 and Ka2= 4.7*10^-11.
a)
2 answers
asked by
Justine
775 views
To create a 0.1 M carbonate buffer pH = 10.2. You choose to use a combination of HCO3- / CO32-. This buffer system has pKa =
1 answer
asked by
Maria
767 views
What molar ratio of acetic acid to sodium acetate is required to create a buffer solution having a pH of 4.83 at 25 Celsius? Ka
2 answers
asked by
Viv
779 views
What is the pH of 1.00 L of the buffer solution that contains 0.100 M HF and 0.120 M NaF after 0.020 mol of HNO3 is added? The
1 answer
asked by
Rebecca
767 views
suppose you made a buffer solution that was 0.050M in both HC2H3O2 and NaC2H3O2.Would the pH changes resulting from the addition
2 answers
asked by
chelsy
783 views
I don't get this at all.
A beaker with 105mL of an acetic acid buffer with a pH of 5.00 is sitting on a bench top. The total
4 answers
asked by
Amanda
763 views
a buffer is made by adding 150 ml of .595M BaF2 and 0f .500M of HF solution.
calculate the pH of this buffer system calculate the
7 answers
asked by
simi
779 views
100 mL of buffer solution that is 0.15M HA (Ka= 6.8x10-5) and 0.20M NaA is mixed with 15.2mL of 0.35M NaOH. What is the pH of
2 answers
asked by
Anonymous
760 views
A buffer is prepared by mixing 205 mL of .452 M HCl and .500 L of .400 M sodium acetate. (Ka =1.80 x 10^-5)
a) What is the pH? b)
3 answers
asked by
Missy
771 views
A particular weak acid (HA) with a Ka of 2.0e-5 is 75% titrated with a strong base to produce a buffer solution. What is the pH
2 answers
asked by
Nicole
735 views
Calculate the amount of NaH2PO4 and Na2HPO4 needed to prepare 100 mL of a buffer with a pH = 8.25 so that the sum of
2 answers
asked by
Anonymous
776 views
How many grams of sodium acetate, NaC2H3O2, would have to be added to 5.00 L of 0.65 M acetic acid (pKa 4.74) to make the
3 answers
asked by
Ava
749 views
Determine the mass of NH2CH2CO2Na and the volume of 0.150 M HCl solution required to make 1.35 L of a buffer solution at
1 answer
asked by
J
763 views
A buffer solution is made as followed:
i)adding 13.50mL of 0.200mol/L sodium hydroxide to 50.00mL of 0.100mol/L propanoic acid.
2 answers
asked by
Sara
773 views
Which one of the following mixtures is suitable for making buffers?
1 H3PO4 and NaH2PO4 2 Na2CO3 and NaHCO3 3 NH4Cl and NH3 a. 1
2 answers
asked by
zacky
752 views
You are instructed to create 500. mL of a 0.25 M phosphate buffer with a pH of 7.7. You have phosphoric acid and the sodium
2 answers
asked by
Sarah
755 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
Joseph
781 views
How do i prepare KH2PO4-KOH buffer 0.2 M of pH 7.4?
1 answer
asked by
Nazneen
749 views
How many grams of Na2CO3 should be mixed with 50.00g of NaHCO3 to produce 2000mL of buffer with pH=10?
4 answers
asked by
Ashley
747 views
Calculate pH of an acetate buffer containing 27.5 mM acetic acid (pKa is 4.74) and 50 mM
sodium acetate. When a 30 mM aq solution
5 answers
asked by
Sarah
761 views
URGENT!!! How many grams of sodium benzoate (NaC6H5CO2) must be added to 500 mL of 0.15 M benzoic acid (HC6H5CO2) to make a
2 answers
asked by
Rainbow
757 views
In the study of biochemical processes, a common buffering agent is the weak base trishydroxymethylaminomethane, often
4 answers
asked by
Alexandra
737 views
How can i prepare a 100ml, 0.1M phosphate buffer solution (pH = 7) out of Na2HPO4 and NaH2PO4
1 answer
asked by
mel
750 views
A chemist needs to prepare a buffer using the carbonate system (information in the table in the previous quetion) with a final
3 answers
asked by
J
739 views
A pH = 7.6 buffer is needed in the lab. This buffer is made by first dissolving 17.42 g K2HPO4 in 600 mL of water. What is the
3 answers
asked by
Carl
740 views
H3PO4 Ka1= 7.5x10^-3 Ka2= 6.2x10^-8 Ka3=4.2x10-^13
Explain how you will make a buffer with a pH of 11.80 using solid Na2HPO4 and
3 answers
asked by
Celina Sandoval
737 views
The ionization constant of HA is 1 × 10−6
. What must be the ratio of [A−] to [HA] for the preparation of a buffer solution
1 answer
asked by
Avery
716 views
I understand part (I) but We have only briefly gone over the HH equation in class and I understand how to use it to get the pH
2 answers
asked by
Tim
746 views
Calculate the mass of salts needed for constructing a buffer using potassium monobasic phosphate and potassium dibasic phosphate
5 answers
asked by
dave
741 views
A beaker with 200 mL of an acetic acid buffer with a pH of 5.00 is sitting on a benchtop. The total molarity of acid and
5 answers
asked by
Bobby
743 views
The pKb of ammonia solution, NH3(aq) is 4.76. A buffer solution contains NH4Cl and NH3, has a pH of 9.45, and a total ammonia
2 answers
asked by
Anonymous
741 views
500 ml of a buffer solution with ph=2.10 must be prepared using .4 M HNO2 and solid KNO2. The ka value of HNO2 is 4e-3.
a.) What
2 answers
asked by
Anonymous
744 views
I have already posted this and never got a response, please help.
here is my data from lab: Buffer1: HPO4- weight 3.412g;
1 answer
asked by
student
714 views
How do you prepare one liter of phosphate buffer 0.01 M at pH 12.0 from 85% phosphoric acid (density 1.69g/ml) and NaOH 1.0 M
2 answers
asked by
Phil
728 views
How to Prepare a 50 mM pH 6 Citrate buffer starting from citric acid as the sole source of conjugate base.
3 answers
asked by
Charlotte
735 views
I am trying to figure out how to calculate the ratio of CH3NH2 to CH3NH3Cl required to create a buffer with pH of 10.26, I'm not
2 answers
asked by
moe
716 views
Will this solution form a buffer?
100 mL of .10 M NH3; 100 mL of .15 M NH4Cl Work: NH3= .01 moles NH4Cl= .015 moles .... not sure
2 answers
asked by
Vanessa
738 views
How many grams of Na2SO3 (Sodium Sulfite) must be added to 225 mL of 0.0777 M sulfurous acid (H2SO3) to prepare a buffer at pH =
2 answers
asked by
James
728 views
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