Question

Acid/base titration experiments could not be used to determine :

• A. the acid concentration of an acidic solution
• B. the alkalinity of a basic solution
• C. the $p{K}_a$ of an unknown weak acid
• D. whether an unknown acid is monoprotic or polyprotic
• E. the molecular weight of an unknown acid or base

Answer 1

The correct option is E the molecular weight of an unknown acid or base

Acid/base titration experiments could not be used to determine the molecular weight of an unknown acid or base.
From acid base titration experiments, we can determine the molarity or the number of moles of an unknown acid or base. But to determine the molecular weight, we need additional data for the mass of the unknown acid or base sample and /or the percentage purity of the unknown acid or base sample.