What volume (mL)of 7.48 × 10^-2 M phosphoric acid can be neutralized with 115 mL of 0.244 M sodium hydroxide? A)125 B)375 C)750 D)188 E)75.0

Question

Quizplus · Accepted Answer

To neutralize the acid, the number of moles of NaOH must equal the number of moles of H3PO4.Moles of NaOH = 0.244 M * 0.115 L = 0.02806 molMoles of H3PO4 = 7.48 × 10^-2 M * V (in L)Setting these equal and solving for V:0.02806 mol = 7.48 × 10^-2 M * VV = 0.375 L = 375 mL

What Volume (ML)of 7