Question

What volume of (2.5M) Hydrochloric Acid will be needed to neutralize 359mL of a 1.50M solution of potassium hydroxide?

Answer 1

HCl + KOH ==> KCl + H2O

mols KO = M x L = ?
Using the coefficients in the balanced equation, convert mols KOH to mols HCl. (That's a 1:1 ratio you see).
Then M HCl = mols HCl/L HCl.