Questions LLC
Login
or
Sign Up
Ask a New Question
Buffer Solutions
Page 2
Questions (707)
Hi I tried to understand this but I don't know why the answer is B:
Which one of the following pairs cannot be mixed together to
3 answers
asked by
Kiki
6,863 views
Explain how to prepare 1L of a buffer at pH 7.4 using 1M hypochlorous acid (Ka = 3.5 x 10-8) and a 1 M NaOH solution. Indicate
1 answer
asked by
Anonymous
489 views
Consider ammonia, what is the pH of a buffer solution prepared by adding 15.0 g of ammonium chloride to 5.00L of 0.200 M
7 answers
asked by
Yamani
1,770 views
What is the pH of buffer solution prepared with 0.05 M ammonia & 0.05 M ammonium chloride? The Kb value of ammonia is 1.80
3 answers
asked by
Neth
1,980 views
. Use the Henderson-Hasselbach equation:
pH = pKa + log [A-]/[AH], where A- is the conjugate base and AH is the weak acid.
2 answers
asked by
meghan
938 views
A popular buffer solution consist of carbonate (CO3 2-) and hydrogen carbonate (HCO3-) conjugate acid-base pair. Which, if any
4 answers
asked by
Debbie
3,705 views
For 520.0mL of a buffer solution that is 0.140M in HC2H3O2 and 0.125M in NaC2H3O2, calculate the initial pH and the final pH
4 answers
asked by
jess
818 views
Calculate the pH of the solution that results from the addition of 12.00mL of 0.225M HNO3 to 20.00mL of 0.210M NH3. Buffer
5 answers
asked by
Anonymous
641 views
A buffer solution is 1.40 M in NH3 and 1.00 M in NH4Cl. If 0.100 moles of NaOH are added to 1.00 L of the buffer, what is its
2 answers
asked by
Haley
664 views
which will become a buffer in 1L of H2O?
a) 0.3 mole KOH & 0.3 mole HBr b) 0.5 mole NH3 & 0.5 mole HCl c) 0.2 mole NaCl & 0.3
2 answers
asked by
Zac
604 views
You need to produce a buffer solution that has a pH of 5.08. You already have a solution that contains 10 mmol (millimoles) of
3 answers
asked by
chem
1,015 views
If you mix 30 mL of 0.05 M K2HPO4 with 24 mL of 0.05 M KH2PO4, what % of the PO4 buffer is in the K2HPO4 form?
I'm just not sure
3 answers
asked by
Hailey
71 views
What mass of solid sodium formate (of MW
68.01) must be added to 130 mL of 0.63 mol/L formic acid (HCOOH) to make a buffer
4 answers
asked by
Helpmepls
1,097 views
Calculate the ratio of NaF to HF required to create a buffer with pH=3.95.
Also, can you please explain in a nutshell the whole
7 answers
asked by
Katie
5,555 views
If you add acid or base to a buffer, how will the pH change.
4 answers
asked by
Anne
1,587 views
How many grams of dry NH4Cl need to be added to 2.10L of a 0.600M solution of ammonia,NH3 , to prepare a buffer solution that
7 answers
asked by
Jessica
11,711 views
A buffer is prepared by mixing 45.0 mL of 0.15 M NaF to 35.0 mL of 0.10 M HF (Ka = 6.8x10^-4) Calculate the pH of this buffer
4 answers
asked by
Sam
2,419 views
PartA: What volume of 10.0M NaOH is needed to prepare a buffer with a pH of 7.79 using 31.52 g of TrisHCl? TrisHCl is a weak
30 answers
asked by
Raj
6,016 views
What mass of solid sodium formate (of MW
68.01) must be added to 115 mL of 0.57 mol/L formic acid (HCOOH) to make a buffer
5 answers
asked by
Anonymous
1,367 views
How would you prepare 1L of a .050 M phosphate buffer at pH 7.5 using crystalline K2HPO4 and a solution of 1 M HCl? pka of H2PO4
6 answers
asked by
HELP!!!
3,721 views
HOW CAN U TELL IF HNO3 +KNO3 IS A BUFFER SOLUTION
A buffer solution must contain a weak acid and its conjugate base OR a weak
4 answers
asked by
CANDY
8,824 views
2. A 350 mL buffer solution containing 0.15 M HF and 0.150 M NaF is reacted with sodium hydroxide. What mass of NaOH can this
5 answers
asked by
help
6,473 views
what is the pH of a buffer that is 0.76 Min HF and 0.98 M in NaF
4 answers
asked by
Fred
702 views
how can i calculate the volume of 3 M HCl needed to change the ph of 75 ml of undiluted buffer by one ph unit (buffer capacity).
7 answers
asked by
opera
1,051 views
One liter of a 0.1 M Tris buffer (pKa of Tris = 8.3, ) is prepared and adjusted to a pH of 2.0.
[HA] = 0.10 and [A-] = 5.012E-8
4 answers
asked by
Sara
629 views
A buffer solution contains 0.052 M HC2H3O2 and 0.025 M NaC2H3O2. The pH of this solution is _____. Ka for HC2H3O2 is 1.8x10-5.
4 answers
asked by
Morgan
3,714 views
Determine how many mL of solution A (acetic acid-indicator solution) must be added to solution B (sodium acetate-indicator
5 answers
asked by
Jake
7,636 views
A 120.0 mL buffer solution is 0.105 M in NH3 and 0.135 M in NH4Br, What mass of HCl could this buffer neutralize before the pH
5 answers
asked by
moe
3,651 views
In protein precipitation, two liters of 5mM buffer solution with pH 5.2 is needed in the isolation of albumin. Which among the
4 answers
asked by
jen
2,084 views
A buffer solution of volume 100.0 mL is 0.140 M Na2HPO4(aq) and 0.120 M KH2PO4(aq). What are the pH and the pH change resulting
5 answers
asked by
Jessica
1,298 views
Which of the following pairs would make a good buffer solution in an aqueous solution?
A) H2SO4 and NaHSO4 B) Ca(NO3)2 and HNO3
4 answers
asked by
Jonah
5,807 views
The pK3 of formic acid is 3.75
A)what is the pH of a buffer in which formic acid and sodium formate have equimolar concentration?
6 answers
asked by
Liz
2,240 views
Calculate the change in PH when 6 ml of 0.1 M HCl is added to 100 ml of a buffer solution that is 0.1 M in NH3 and 0.1 M in
10 answers
asked by
Mima
8,338 views
Buffer capacity is a measure of a buffer solution\'s resistance to changes in pH as strong acid or base is added. Suppose that
6 answers
asked by
Brody
6,900 views
What are the concentrations of HOAc and OAc- in a 0.2 M “acetate” buffer, pH 5.0? The Ka for acetic acid 1.70x10-5 (pKa
4 answers
asked by
Noura
1,464 views
use the Henderson-Hasselbalch equation to calculate the pH of a buffer solution prepared by mixing equal volumes of 0.20 M
4 answers
asked by
abc
5,054 views
A buffer is formed by adding 500mL of .20 M HC2H3O2 to 500 mL of .10 M NaC2H3O2. What would be the maximum amount of HCl that
4 answers
asked by
alexa
1,320 views
Calculate the pH of the 0.20 M NH3/0.25 M NH4Cl buffer.
I calculated the pH to be 9.15 What is the pH of the buffer after the
4 answers
asked by
Cam
2,545 views
A buffer solution is prepared by mixing 80.0 mL of 0.20 M NaH2PO4 and 120.0 mL of 0.20 M Na2HPO4.What is the pH of the resulting
3 answers
asked by
Ella
1,072 views
How would you make 100 mL of a carbonic acid buffer at 0.2 M and pH = 9.8 using 0.5 M HCO3 and either 0.1 M NaOH or 0.1 M HCl
3 answers
asked by
Ammu
1,265 views
A buffer solution is prepared by combining 100 mL of 0.010 M HCOOH and 80 mL of 0.010 M NaHCOO.
Calculate the pH of this buffer
4 answers
asked by
Joe
489 views
The Ka for the H2PO4–/HPO42– buffer is given by the equation:
Ka= ([HPO4^-2]gamma [H^+])/[H2PO4^-]=10^-7.20 What is the pH of
4 answers
asked by
Cat
3,485 views
Which of the following mixtures will result in the formation of a buffer solution if all solutions are 1.0 M before mixing?
i)
4 answers
asked by
Paul
2,306 views
You wish to prepare a pH 4.76 acetic acid-sodium acetate buffer with a buffer capacity of 1M per ph. What concentration of
2 answers
asked by
Anonymous
165 views
Chemist needs a buffer with pH of 4.5.
how many milliliters of pure CH3COOH (density;1.049g/ml) must be added to 500ml of 0.1M
4 answers
asked by
Heston
935 views
The pKa of HEPES is 7.55 at 20 degrees C, and its MW is 238.31. Calculate the amounts of HEPES in grams and of 1.0 M NaOH in
4 answers
asked by
Shameca
2,179 views
Describe the preparation of 5 liters of a 0.3 M acetate buffer, pH 4.47, starting from a 2M solution of acetic acid and a 2.5M
4 answers
asked by
SAM
1,222 views
You have at your lab bench the following chemicals: NaH2PO4(s), Na3PO4(s), NH4Cl(s), CH3COONa (s), 1.00 M NaOH, 1.00 M HCl, and
4 answers
asked by
Sarah Walker
1,927 views
Calculate the volume 0.1 M of acetic acid and 0.1 M sodium acetate required to prepare 300 mL of 0.05 M acetate buffer solution
1 answer
asked by
Anonymous
649 views
A buffer is prepared by transferring equal concentrations of the components of the conjugate pair, C6H5COOH and C6H5COONa, into
4 answers
asked by
Greg
497 views
Pages
1
2
3
4
5
6
7
8
9
10
Parent Categories (42)
Acid-Base Chemistry
Acid-Base Equilibria
Acid-Base Equilibrium
Acid-base reactions
Acids and Bases
Aqueous Solutions
Biochemistry
Chemical Compounds
Chemical Equations
Chemical equations and reactions
Chemical Equations, pH Calculation
Chemical Equilibrium
Chemical Reactions
Chemical Reactions/Molecules
Chemical Reactions/Solutions
Chemical Solutions
Chemistry
Enzyme-catalyzed reactions
Equilibrium
Equilibrium and Acids/Bases
Equilibrium Reactions
Lab Techniques
Laboratory Solutions
Laboratory Techniques
Mixtures
Mixtures and Solutions
Organic Chemistry
pH Calculations
Reaction kinetics
Reactions
Solubility
Solution Chemistry
Solution Preparation
Solutions
Solutions and Acids
Solutions and Acids/Bases
Solutions and Concentrations
Solutions and Mixtures
Solutions and pH
Solutions and Solubility
Stoichiometry
Stoichiometry/Chemical calculations