If 45.3 ml of a 0.108 M HCL solution is needed to neutralize a solution of KOH, then grams of KOH that must be present in the solution is 0.274gm.
The amount of a substance present in a certain volume of solution is termed as molarity . It can also be defined as the moles of a solute per liter of solution.
HCL +KOH ---> KCL+ H2O
Molarity= mol solute / L solution
Given volume of HCL= 45.3ml= 0.0453L
concentration = 0.108M
As we know that, No. of moles = concentration * Volume
=0.0453* 0.108
Number of moles=0.0048
Mass = no. of moles*molar mass
Molar mass of KOH = 56.1 g/mol
= 0.00489* 56.1
Grams of KOH= 0.274 gm.
To know more about molarity, refer
https://brainly.com/question/14469428
#SPJ4