Fermi
·
Concept Library
·
Courses
·
Books
·
Problems
·
Simulations
·
Math Wiki
·
High School
Fermi
›
Problems
Chemistry
Chemistry
Problem
Acetic acid (HC
2
_2
2
H
3
_3
3
O
2
_2
2
) has
K
a
=
1.8
×
10
−
5
K_a = 1.8\times10^{-5}
K
a
=
1.8
×
1
0
−
5
. Using the approximation that the concentration of undissociated acid remains 0.020 M at equilibrium, which of the following is closest to the calculated pH of the solution? a)
2.72
2.72
2.72
b)
4.74
4.74
4.74
c)
3.22
3.22
3.22
d)
2.42
2.42
2.42
Browse the problem library