Question #58555
The Ka for methanoic acid, the chemical that causes the sting in insect bites, is 1.8 x 10^-4. Calculate the pH of a 0.40 mol/L methanoic acid solution.
Expert's answer
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#340153 on Dec 2023
#340153 on Dec 2023
Comments
Dear Jane Thank You
There is a mechanical error in the 5th line of the solution, after, "we get:". The molar concentration is c=0.40 according to the question but, in this line it was written as c=0.04. This alters the final answer from pH=2.07 to pH=2.57. Other then this the question is answered well.