An International Book Fair is going to be held at Island Ground, Chennai. As a Librarian write a notice informing the students about the fair. Give all other necessary details.

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Which of the following solution(s) would be a buffer? Select all that apply.
a. 100.0 mL of a solution that contains 0.100 M benzoic acid and 0.100 M potassium benzoate
b. 100.0 mL of a 0.100 M propanoic acid