How many milliliters of 0.250M #NaOH# are required to neutralize 30.4 mL of 0.152 M #HCl#?
We need an equivalent quantity of sodium hydroxide;
What I should have done at the beginning is to write the stoichiometric equation:
Why should I write this first? Because it establishes the stoichiometry; the 1:1 molar equivalence. One equiv of sodium hydroxide reacts with one equiv hydrochloric acid. Thus if I know the quantity of acid, I also know the quantity of base. There will be reactions where a different stoichiometry pertains.