A 0.010 M solution of aspirin has a pH = 3.3. (4) a. Calculate the [H3O+] in this solution. b. Based on the information given, is aspirin a strong or a

Question

A 0.010 M solution of aspirin has a pH = 3.3. (4)


a. Calculate the [H3O+] in this solution.





b. Based on the information given, is aspirin a strong or a weak acid? Explain.

Answer 1

[H₃O+] = 10^-pH = 10^-3.3 = 5.01 x 10^-4 moles/liter

An acid has a pH below 7, and a base has a pH above 7. The lower the pH of the acid (i.e. the farther it is from 7 on the low side), the stronger the acid.