Formic acid is classified as a weak acid with a Ka of 1.7 x 10-4 given by the following equilibrium: 2. I C E a) b) Starting with an initial concentration of 0.15 M, using x as the variable prepare an ICE table for this reaction. c) HCOOH * HCOO + H* Write the equilibrium equation for the dissociation of formic acid in water. d) HCOOH HCOO H* Input the "E" values into the equilibrium equation and solve for x using the quadratic approximation. Calculate the pH of this solution at equilibrium.

Chemistry for Engineering Students
4th Edition
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Chapter12: Chemical Equilibrium
Section: Chapter Questions
Problem 12.11PAE
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2
2.
following equilibrium:
I
с
E
a)
Formic acid is classified as a weak acid with a Ka of 1.7 x 10-4 given by the
c)
d)
HCOOH
Z
b)
Starting with an initial concentration of 0.15 M, using x as the variable prepare
an ICE table for this reaction.
HCOO + H+
Write the equilibrium equation for the dissociation of formic acid in water.
HCOOH
HCOO
H+
Input the "E" values into the equilibrium equation and solve for x using the
quadratic approximation.
Calculate the pH of this solution at equilibrium.
3
Transcribed Image Text:2. following equilibrium: I с E a) Formic acid is classified as a weak acid with a Ka of 1.7 x 10-4 given by the c) d) HCOOH Z b) Starting with an initial concentration of 0.15 M, using x as the variable prepare an ICE table for this reaction. HCOO + H+ Write the equilibrium equation for the dissociation of formic acid in water. HCOOH HCOO H+ Input the "E" values into the equilibrium equation and solve for x using the quadratic approximation. Calculate the pH of this solution at equilibrium. 3
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