Questions LLC
Login
or
Sign Up
Ask a New Question
Buffer Solutions
Page 9
Questions (707)
A buffer is made by dissolving H3PO4 and NaH2PO4 in water.
1. Write an equation that shows how this buffer neutralizes added
1 answer
asked by
Mernyshia
1,135 views
Calculate the pH of 1.00L of a buffer that is 0.120M HNO2 and 0.150M NaNO2 before and after the addition of 1.00mL of 12.0M HCl
4 answers
asked by
Amanda
1,108 views
A solution is 0.10M in aqueous NH3. Calculate (a) the number of moles and (b) the number of grams of NH4Cl that must be added to
2 answers
asked by
Chen
1,121 views
1L of a buffer composed of NaHC2O4 and Na2C2O4 has a pHof 4.0 and a total molarity of 1.
a). what would the effect on the pH be
6 answers
asked by
Ashley
1,091 views
do we have buffering region and ph=pka in any of these conditions:
strong base vs strong acid strong base vs weak acid weak base
1 answer
asked by
eng
1,071 views
A buffer is prepared by adding 300.0 mL of 2.0 M NaOH to 500.0 mL of 2.0 M CH3COOH. What is the pH of this buffer? Ka = 1.8 ×
2 answers
asked by
Anavia
1,070 views
You want to prepare a pH=4.50 using sodium acetate and glacial acetic acid. You have n hand 300 mL of 0.100 M sodium acetate.
2 answers
asked by
Amanda
1,076 views
Describe using complete calculations how you would prepare 20.0 mL of a buffer with a pH of 9.00 using 0.12 M NH4Cl (aq) and
5 answers
asked by
Anonymous
1,048 views
Using a 0.20 M phosphate buffer with a pH of 6.7, you add 0.71 mL of 0.55 M HCl to 52 mL of the buffer. What is the new pH of
2 answers
asked by
Ashlee
1,039 views
As a technician in a large pharmaceutical research firm, you need to produce 200.mL of 1.00 M a phosphate buffer solution of pH
2 answers
asked by
moses
1,051 views
How many grams of solid KOH must be added to 100ml of a buffer solution which is 0.1M each with
respect to the weak acid HA and
3 answers
asked by
Sandu
1,035 views
A buffer is made up of .300 L each of .500 M KH2PO4 and .317 M K2HPO4. Assuming tha the volumes are additive, calculate
a) the pH
1 answer
asked by
James
1,048 views
What weights of NaH2PO4 and NaHPO4 would be required to prepare a buffer solution of pH 7.45 that has an ionic strength of 0.1?
6 answers
asked by
??
1,031 views
You need to prepare 100.0 mL of a pH=4.00 buffer solution using 0.100 M benzoic acid (pKa = 4.20) and 0.180 M sodium benzoate
How
4 answers
asked by
Adam
1,017 views
What volume of 0.200M of aqueous solution of formic acid, a weak monoprotic acid (KA =
1.78x10-4) and 0.200M aqueous solution of
2 answers
asked by
Sam
1,014 views
A buffer is prepared by adding 300.0 mL of M NaOH to 400.0 ML of 2.0 M CH3COOH. What is the pH of this buffer? ks=1.8X10^-5
2 answers
asked by
Daniel
983 views
A buffer contains 1.0mol CH3CO2H and 1.0mol CH3CO2^- diluted with water to 1.0L. How many moles of NaOH are required to increase
2 answers
asked by
Sean
994 views
A lactic acid/lactate ion buffer solution contains 0.19 M HC3H5O3 and 0.78 M C3H5O3-, respectively. The Ka value of lactic acid
3 answers
asked by
Lynne
999 views
How many grams of dry NH4Cl need to be added to 2.00L of a 0.100M solution of ammonia, NH3, to prepare a buffer solution that
2 answers
asked by
Jennifer
972 views
Two of the questions my teacher put on the review sheet for our Acid/Base test are
1) what is the characteristic property of a
2 answers
asked by
Alison
969 views
Say, for example, that you had prepared a Buffer C, in which you mixed 8.203 g of sodium acetate, NaC2H3O2, with 100.0 mL of 1.0
1 answer
asked by
Frank
965 views
What is the change in ph after addition of 10.0 ml of 1.0 m sodium hydroxide to 90.0 ml of a 1.0 m nh3/1.0 m nh4+ buffer? [kb
2 answers
asked by
Sarah
921 views
Say, for example, that you had prepared a Buffer C, in which you mixed 8.203 g of sodium acetate, NaC2H3O2, with 100.0 mL of 1.0
3 answers
asked by
Frank
959 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
939 views
You prepare a buffer solution by dissolving 2.00 g each of benzoic acid, C6H5COOH and sodium benzoate, NaC6H5COO in 750.0 mL of
2 answers
asked by
Dron
957 views
A beaker with 150 mL of an acetic acid buffer with a pH of 5.00 is sitting on a benchtop. The total molarity of acid and
3 answers
asked by
Saira
942 views
How many grams (to the nearest 0.01 g) of NH4Cl (Mm = 53.49 g/mol) must be added to 700. mL of 1.294-M solution of NH3 in order
2 answers
asked by
ashleigh
932 views
Phosphoric acid is a triprotic acid with the following pKa values:
pKa1=2.148 pKa2=7.198 pKa3=12.375 You wish to prepare 1.000 L
2 answers
asked by
Laura
917 views
pls help me.
A buffer was prepared by dissolving 0.100 mol of the weak acid HA (Ka = 1.00 × 10−5) plus 0.050 mol of its
2 answers
asked by
canas
929 views
How many moles of sodium acetate CH3COONA must be dissolved in 1.00L of 0.200M acetic acid to make a buffer pH 4.56? ka of
3 answers
asked by
linda
917 views
will 1 molar NH3 and 1 molar NH4Cl form a buffered solution?
2 answers
asked by
Anonymous
902 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
910 views
Calculate the ph of a buffer solution that is 0.10M in ammonia and 0.15M in ammonium chloride .kb for ammonia is 1.8*10^-5
3 answers
asked by
lina
901 views
Acetic acid (CH3COOH) has a Ka of 1.8x10^-5. a buffer is to be prepared with a pH of 5.00 from solutions of CH3COOH and sodium
2 answers
asked by
robyn
894 views
The Ka for hydroflouric acid is 4.5 *10^-4 at 298K. Calculate the amount of sold NaF that is required toprepare a 250. mL acidic
2 answers
asked by
Jake
891 views
Which weak acid would be best to use when preparing a buffer solution with a pH of 8.50?
1) an acid with Ka=3.3x10^-9 2) an acid
4 answers
asked by
Anonymous
894 views
Tris(hydroxymethyl)aminomethane, commonly called TRIS or Trizma, is often used as a buffer in biochemical studies. Its buffering
1 answer
asked by
John
889 views
What volumes of 0.47 M HF and 0.47 M NaF must be mixed to prepare 1.00 L of a solution buffered at pH = 3.50?
HF NaF
1 answer
asked by
Margaret
869 views
If you have a list of acids or bases and their conjugate salts, and are asked which pairs create the best buffer, how would you
3 answers
asked by
micole
880 views
What is the solubility of ZnCO3 at 25 o C in a buffer solution with a pH of 9.74?
3 answers
asked by
Snow
864 views
How do I do a question like this please help and explain it!!
Calculate the pH of a buffer solution that contains 0.22 M benzoic
2 answers
asked by
Brittany
862 views
A buffer solution is 1.00 M in NH3 and 1.10 M in NH4Cl. If 0.230 moles of NaOH are added to 1.00 L of the buffer, what is its
2 answers
asked by
nick
861 views
Calculate amount of 1 M acetic acid and 1M sodium acetate necessary to prepare 50 ml of a 0.15 M buffer at ph 4.80. (pka acetic
3 answers
asked by
Marie
852 views
A 1.0L buffer solution contains 0.100 mol
of HC2H3O2and 0.100 molof NaC2H3O2 . The value of Ka for HC2H3O2 is 1.8×10−5.
2 answers
asked by
Anonymous
859 views
How would you make 100mL of tartrate buffer, pH 3.5, from 0.100 M tartaric acid, 1M NaOH and deionized and distilled H2O? You
1 answer
asked by
Elle
800 views
What volume of 0.100 M NaOH is needed to make 100.0 mL of a buffer solution with a pH of 6.00 if one starts with 50.0 mL of
1 answer
asked by
rodger
843 views
Assume you have prepared 100.0 mL of a buffer solution using 0.400 mol of acetic acid (pKa = 4.74) and 0.400 mol of sodium
2 answers
asked by
J
831 views
Calculate the ratio of NaF to HF required to create a buffer with a pH of 4.00.
2 answers
asked by
Cooper
817 views
I posted a question earlier that I was having trouble with, but I was unable to attempt to try it again for several days after
1 answer
asked by
James
825 views
What is the pH of a buffer solution made from 0.20M HC2H3O2 abd 0.5M C2H302^-.The ionization constant of the acid
2 answers
asked by
lovemore
1,244 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