A 40.00 mL sample of 0.1000 M diprotic malonic acid is titrated
with 0.0900 M KOH....
A 40.00 mL sample of 0.1000 M diprotic malonic acid is titrated
with 0.0900 M KOH. What volume KOH must be added to give a pH of
6.00 ? Ka1 = 1.42 × 10−3 and Ka2 = 2.01 × 10−6.
A 25.00 mL sample of 0.120 M of the diprotic malonic acid,
HOOC-CH2-COOH, was titrated with 0.250 M NaOH. If the following
results were obtained, calculate Ka1 and Ka2.
mL NaOH added: 5.00 6.00 10.00 12.00 15.00 18.00 20.00 24.00
pH: 2.68 2.83 3.53 4.26 5.21 5.69 6.00 9.24
40.00 mL of a 0.1000 M carbonic acid
(H2CO3) was titrated with 0.2000 M
sodium hydroxide.
carbonic acid pka1:6.35 pka2:10.33
1.Calculate the volume of sodium hydroxide required to reach the
first equivalence point.
2.Calculate the volume of sodium hydroxide required to reach the
second equivalence point.
3.Write the balanced acid-base reaction and calculate the pH
before the addition of sodium hydroxide.
4.Write the balanced acid-base reaction and calculate the pH
after the addition of 12.00 mL of sodium hydroxide
5.Write...
A 25.0 mL sample of 0.35 M lactic acid, HC3H5O3, is titrated
with 0.070 M KOH. Determine the pH of the solution at the
equivalence point and at half-way to equivalence point. The Ka of
lactic acid is 1.38x10^-4.
A solution of 100.0 mL of 1.00 M malonic acid (H2A) was titrated
with 1.00 M NaOH. K1 = 1.49 x 10-2, K2 = 2.03 x 10-6. What is the
pH after 50.00 mL of NaOH has been added?
Calculate the pH during the titration of 30.00 mL of 0.1000 M
KOH with 0.1000 M HBr solution after the following additions of
acid: (a) 5.00 mL (b) 29.50 mL (c) 36.00 mL
Calculate the pH during the titration of 30.00 mL of 0.1000
M KOH with 0.1000 M HBr solution after the
following additions of acid:
(a) 8.00 mL
pH =
(b) 29.80 mL
pH =
(c) 38.00 mL
pH =
A 0.02500 g sample of the diprotic acid malonic acid (H2C3H2O4)
is dissolved in water to yield a 2.00 L solution. What is the
resulting pH of the solution and the concentration of malonate ion
(C3H2O4^2-) at equilibruim?
Malonic acid (H2M) is a diprotic acid. You wish to prepare a
buffer of malonic acid (pKa1 = 2.847, pKa2= 5.696) with a final pH
of 2.90 but you only have disodium malonate (M2-) in your
laboratory shelf. You dissolve 100 mmol of this salt in 1 L of
water. Assume both dissociation processes are decoupled.
What is the initial pH of the solution? State any assumptions
you make.
How many equivalents of strong acid must you add to your...
A 20.00 mL solution of 0.200M diprotic acid (H2A,
pKa1=3.500, pKa2=8.500) is titrated with
0.250M KOH. Sketch the titration curve for this titration. Label
the x-axis, y-axis, pKa's, and equivalence points.