Homework Statement
What is the H3O+ concentration of a 0.100 M acetic acid solution (Ka = 1.8 x 10-5)?
a. 1.8 x 10-5
b. 1.8 x 10-4
c. 1.3 x 10-2
d. 1.3 x 10-3
e. 0.9 x 10-3
Homework Equations
The Attempt at a Solution
so the question is supposed to be D. but I thought that...