20 mL of concentrated KOH solution was placed in a 100 cm3 flask and made up to the mark. The addition of 30 mL of 0.75 M H2SO4 resulted in complete neutralization of 25 mL of the diluted KOH solution. What is the concentration of the original KOH solution? [9 marks]


Balanced equation [1]

Moles of standard
[2]

Moles of analyte [2]

Concentration of analyte in diluted solution [2]

Concentration of analyte in concentrated solution [2]