Which of the following would require the largest volume of 0.100 M sodium hydroxide solution for neutralization?
A)10.0 mL of 0.0500 M phosphoric acid
B)20.0 mL of 0.0500 M nitric acid
C)5.0 mL of 0.0100 M sulfuric acid
D)15.0 mL of 0.0500 M hydrobromic acid
E)10.0 mL of 0.0500 M perchloric acid

Question

Quizplus · Accepted Answer

Phosphoric acid (H3PO4) is a triprotic acid, meaning it can donate three protons (H+) per molecule. To neutralize 10.0 mL of 0.0500 M phosphoric acid, more moles of sodium hydroxide (NaOH) are needed compared to the other acids listed, which are all monoprotic (donate one proton per molecule). The volume of 0.100 M NaOH required is calculated based on the stoichiometry of the neutralization reaction, taking into account the number of moles of H+ ions each acid can donate.

Which of the Following Would Require the Largest Volume of 0.100