Question
In: Chemistry
An aqueous solution of formic acid, that is 1.00 percent by weight formic acid, has a...
An aqueous solution of formic acid, that is 1.00 percent by weight formic acid, has a density of 1.0006 g/mL. A student determines that the freezing point of this solution is -0.421 °C.
Based on the observed freezing point,
what is the percent ionization of the acid and the value of
Ka?
Kf for H2O is 1.86 °C/m.
Solutions
queen_honey_blossom answered 2 years agoRelated Solutions
The pKa of formic acid was measured by titrating a 1.00 mM solution of formic acid...
The pKa of formic acid was measured by titrating a 1.00 mM
solution of formic acid with NaOH in the presence of varied
concentrations of NaCl. The results are as listed:
NaCl (mM)
10
25
50
100
200
pKa
4.65
4.58
4.53
4.45
4.40
utilize a graphical method to determine the true pKa of formic
acid (debye-huckle is valid)
Provide step by step instructions if excel is utilized.
An aqueous solution of formic acid, HCOOH, is prepared at 0.075 M. The acid-ionization constant is...
An aqueous solution of formic acid, HCOOH, is prepared at 0.075
M. The acid-ionization constant is Ka
= 1.8 x 10-4. Because this is a weak acid, you may
presume that the ionic strength is negligible (m = 0).
Calculate:
a) the pKa of HCOOH
b) [H+]
c) [HCOO-]
d) [HCOOH] at equilibrium
Calculate the percent ionization of formic acid (HCO2H) in a solution that is 0.219 M in...
Calculate the percent ionization of formic acid
(HCO2H) in a solution that is 0.219 M in formic acid.
The Ka of formic acid is 1.77 x 10-4.
Calculate the percent ionization of formic acid in a solution that is 0.010 M HCOOH and...
Calculate the percent ionization of formic acid in a solution
that is 0.010 M HCOOH and 0.005 M HCOONa.
Ka (HCOOH) = 1.7x10-4 ? 3.4% is correct
answer
Calculate the percent ionization of formic acid (HCO2H) in a solution that is 0.139 M in...
Calculate the percent ionization of formic acid (HCO2H) in a
solution that is 0.139 M in formic acid. The Ka of formic acid is
1.77
A solution of formic acid (HCOOH) has a pH of 2.11. How many grams of formic...
A solution of formic acid (HCOOH) has a pH of
2.11.
How many
grams of formic acid are there in
100.0 mL
of the solution?
(a) Determine the pH and the percent ionization of a 0.205 M formic acid solution. (b)...
(a) Determine the pH and the percent ionization of a 0.205 M
formic acid solution.
(b) Also determine the pH and percent ionization of formic acid
in a solution 0.205 M in formic acid, and 0.295 M in sodium
formate, NaOOCH.
Formic acid, HCOOH, has an equilibrium constant, Ka = 1.77 x
10-4 M.
Formic acid (HCOOH) is secreted by ants. Calculate [H3O+] for a 4.98E-2 M aqueous solution of...
Formic acid (HCOOH) is secreted by ants. Calculate
[H3O+] for a 4.98E-2 M aqueous solution of
formic acid (Ka = 1.80E-4).
A buffer was prepared by adding 1.00 mol of formic acid and 1.00 mol of sodium...
A buffer was prepared by adding 1.00 mol of formic acid and 1.00
mol of sodium formate to 1.00 L of distilled water. A 100.0 mL
aliquot of 1.00 M HCl is then added. What is the pH of the
resulting buffer solution? (Formic acid pKa=3.74)
Calculate the pH of a 0.500M formic acid (HCOOH) solution. Ka for formic acid is 1.8×10-4.
Calculate the pH of a 0.500M formic acid (HCOOH)
solution. Ka for formic acid is
1.8×10-4.
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