Let's make a balance equation for this
Potassium hydroxide = KOH
hydrogen chloride = HCl
HCl + KOH → KCl + H2O
In this equation, the ratio of the number of mole of HCl to the number of mole of KOH is 1:1.
The molar mass of HCl is 36.46.
The molar mass of KOH is 56.11.
Let's start to solve
Therefore, there are 28.09 g of Potassium hydroxide needed to neutralize 18.25 g of hydrogen chloride.