Question

HCl + NaOH NaCl + H2O. What volume of a 6.0 M HCl solution is required to completely neutralize 125.0 ml of a 2.5 M NaOH solution?

Answer 1

Calculate the number of moles of NaOH solution.

Hint: Liters * Molarity = moles

We want the same amount of moles of HCl as NaOH so that the solution will be completely neutralized. (Keep in mind that HCl is a strong acid and NaOH is a strong base.)

So once you have moles of base, you know that moles of acid should be the same.

Molarity = moles/Liter

so for the acid, we have the Molarity and moles, so solve for Liters which is the volume.