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Buffer Solutions
Page 6
Questions (707)
if you added 4ml NaOH 1M to your 100ml 0.1M buffer, would it still be a usable buffer according to our convention? Explain why
1 answer
asked by
yy
1,186 views
You are instructed to create 600. mL of a 0.56 M phosphate buffer with a pH of 7.6. You have phosphoric acid and the sodium
2 answers
asked by
Mia Ismaili
1,040 views
A 1.00 L buffer solution is 0.250 M in HC2H3O2 and 0.250 M in NaC2H3O2. Calculate the pH of the solution after the addition of
2 answers
asked by
Nevaeh
1,194 views
You wish to prepare a pH 4.76 acetic acid sodium acetate buffer with a buffer intensity of 1 M per pH. What concentrations of
2 answers
asked by
Kaly
742 views
You need to use KH2PO4 and K2HPO4 to prepare a buffer with a pH of 7.45. Which of the following ratios of [base]/[acid] is
3 answers
asked by
Jenny
2,077 views
You have 775 mL of an 0.11 M acetic acid solution. What volume (V) of 1.10 M NaOH solution must you add in order to prepare an
1 answer
asked by
Jessica
411 views
A buffer solution of volume 50.0 mL contains 12.5 mmol HNO2 and 9.25 mmol KNO2.
1. What is the pH of this solution? 2. If 1.00
2 answers
asked by
Smi
650 views
Calculate the amount (in mL) of 1.520M NaOH that is required to add the following acetic acid solution to prepare a buffer with
3 answers
asked by
Mike
593 views
Determine the pH of a buffer that is prepared by mixing 100 mL of 0.2 M NaOH and 150 mL of 0.4 M acetic acid assuming the volume
2 answers
asked by
John
695 views
Calculate the pH of the buffer system of 0.20M K2HPO4/0.25M KH2PO4
4 answers
asked by
Yeah
611 views
how many buffer solutions can be made using NaOH and H3PO4.Explain pls....
2 answers
asked by
shweta
498 views
You have 875 mL of an 0.53 M acetic acid solution. What volume (V) of 1.30 M NaOH solution must you add in order to prepare an
1 answer
asked by
Owen
421 views
You have 325 mL of an 0.11 M acetic acid solution. What volume (V) of 2.00 M NaOH solution must you add in order to prepare an
1 answer
asked by
joy
429 views
How many moles of NaOH must be added to 1.0 L of 2.6 M HC3H5O3 to produce a solution buffered at each pH?
1)pH= 4.28 2)pH=pKa
3 answers
asked by
Julie
1,892 views
A buffered solution is made by adding 47.4 g C2H5NH3Cl to 1.00 L of a 0.68 M solution of C2H5NH2. Calculate the pH of the final
2 answers
asked by
Julie
1,065 views
a buffer solution is 0.2M in acetic acid and in sodium acetate. Calculate the change in pH upon adding 1.0ml of 0.1M
2 answers
asked by
woo
725 views
Write up the recipe to make 100mL of a 200mM phosphate buffer, pH 7.0 by using:
(a) only NaH2PO4 (MW 120g/mol) and NaOH (1.00M)
3 answers
asked by
Abba
842 views
you have a 0.200L of solution containing 250mM phosphate buffer, pH 6.8.
An equivalent amount of HCl/NaOH with respect to the
3 answers
asked by
Abba
635 views
What is the pH of the buffer solution that results when 58.50 g of sodium acetate (NaCH3CO2) (Formula Mass = 82.02 g mol-1) is
2 answers
asked by
Sue
582 views
describe the preparation of 2litres of 0.2M acetate buffer of pH 5.5,starting from 2.5M solution of acetic acid and 2.5M
2 answers
asked by
OCHAI
873 views
What mass of ammonium chloride must be added to a 0.500 L solution of 0.250 M ammonia to make a buffer with a pH of 9.26? Kb
3 answers
asked by
paula
1,619 views
To have a buffer with a pH of 2.50, what volume of 0.510 M NaOH must be added to 100. mL of 0.230M H3PO4?
2 answers
asked by
Shannon
523 views
1.) Quantify the pH for a solution prepared by dissolving 0.050 moles of Acetic Acid (CH3COOH) and 0.20 moles of Sodium Acetate
3 answers
asked by
Always
690 views
d 25 ml of 0.15 M HCL solution be added to 250 mL of buffer solution containing 0.25M HF Ka-7.1 x 10, and 0.40 M NaF at a pH of
1 answer
asked by
Always
430 views
Calculate how you would make 0.5L of a 0.5M (500mM) acetate buffer at a pH of 4.7. Available is sodium acetate and glacial
4 answers
asked by
Nicole
1,553 views
A reference calls for the use of "one litre of 0.1 molar acetate buffer pH 5.2” Calculate the amounts of sodium acetate and
2 answers
asked by
SAMUEL
517 views
You are instructed to create 400. mL of a 0.40 M phosphate buffer with a pH of 6.9. You have phosphoric acid and the sodium
2 answers
asked by
leah
1,065 views
Calculate the volume of 0.05 M NaOH which must be added to 100 cm3 of 0.05 M methanoic acid to obtain a buffer of pH 4.23. (Ka
1 answer
asked by
Teagan
438 views
How much 6.0M NaoH must be added to 0.5L of a buffer that is 0.0200M acetic acid and 0.0250M sodium acetate to raise the PH to
1 answer
asked by
Mohanad
455 views
What are the concentrations of benzoic acid and sodium benzoate in a solution that is buffered with a pH of 4.55 and has a
2 answers
asked by
Cj
525 views
What is the ratio of the molarities of PO3^4- and HPO4^2− ions in a buffer solution having a pH of 13.16?
What mass of K3PO4
2 answers
asked by
gabriella
1,308 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
2 answers
asked by
gabriella
651 views
A buffer solution is prepared by mixing 2.50 mL of 2.00M sodium acetate with 3.30mL of 0.500M HCl and diluting the buffer with
2 answers
asked by
Maria
694 views
You have prepared a 400 mL of a .210 M acetate buffer solution with a pH of 4.44.
1. Determine the concentration of both the
2 answers
asked by
Ross
975 views
How many grams of H3BO3 and mL of NaOH (with concentration 0,1M) should you add, to get a 500mL buffer, with pH 9.
pKa=9,236
1 answer
asked by
Maria
275 views
Calculate the relative concentrations of o-ethylbenzoic acid (pKa 3.79) and potassium o-ethylbenzoate that are needed to prepare
1 answer
asked by
amber
365 views
A buffer solution is made using a weak acid, HA. If the pH of the buffer is 1.0 × 101 and the ratio of A– to HA is 10, what
2 answers
asked by
Brianna
569 views
A student is asked to make an acetic acid/ acetate buffer with a pH of 4.10. The only materials on hand are 300 mL of white
3 answers
asked by
lola
1,580 views
How to start these problems out: Please help thank you
Use the Henderson-Hasselbach equation: pH = pKa + log [A-]/[AH], where A-
10 answers
asked by
meghan
536 views
How many milliliters of 0.5M NaOH must be added to 200 mL of 0.1M NaH2PO4 to make a
buffer solution with a pH of 6.9?
2 answers
asked by
Joanna
1,181 views
Do you add Nacl or HCL if your target buffer pH is 8, and the buffer is HEPES
3 answers
asked by
Dan
326 views
how to calculate a primary standard buffer using Kh2po4 and Na2Hpo4..
2 answers
asked by
crazy
561 views
How do you calculate the molarities of HC2H3O2 and NaC2H3O2 in a buffer solution?
2 answers
asked by
Marci
983 views
Find the mass of sodium formate that must be dissolved in 200.00cm^3 of a 1.0M solution of formic acid to prepare a buffer
3 answers
asked by
Bianca
503 views
How many ml of 0.2M NaH2PO4 should b added to 40 mL of 0.1M Na3PO4 to make the buffer pH 7.2.
Ka1:1.1 x 10^-2 Ka2:7.5 x 10^-8
1 answer
asked by
NIC
419 views
calculate the ph of a buffer solution prepared by adding 0.397 mole of the sodium salt of a weak organic acid HA to 0.474 L of
2 answers
asked by
Meenakshi
907 views
ph is 4.6, pKa is 4.76 in a .15M buffer solution, what are the concentrations of acid and base?
2 answers
asked by
Lola
528 views
you have 1.00 liter each of 0.10 M Na3PO4, Na2HPO4, NaH2po4 ka 1= 7.5*10^-3 ka2=6.2*10^-8 ka3=4.8*10^-13 a) prepare 500 ml of a
2 answers
asked by
cat
746 views
How many grams of formic acid, HCOOH, must be added to 0.270L of 0.180M sodium formate, HCOONa, to yield a buffer solution with
4 answers
asked by
Cayla
1,140 views
A buffer solution is composed of 0.370M HA, a weak monoproctic acid, and 0.370M NaA, the sodium salt of the acid. The solution
1 answer
asked by
Cayla
458 views
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