You have 30.285 ml of percholric acid with a concentration of 0.110m,how many ml of of a 0.2000m KOH solution how much do you need to add to completely neutralize the acid.

Answer 1

Perchloric acid = HClO₄

Write the balanced equation for the reaction:

HClO4 + KOH ==> H2O + KClO4

Find the moles of HClO4 present (assuming it is 0.110 M and not 0.110 m - they mean different things)

30.285 mls x 1 L / 1000 mls x 0.110 mols/L = 0.00333 moles

Find the moles of KOH needed to react with 0.00333 moles HClO4

0.00333 mols HClO4 x 1 mol KOH / 1 mol HClO4 = 0.00333 mols KOH needed

Find the volume of 0.2000 M KOH needed to supply 0.00333 mols of KOH:

0.00333 mols KOH x 1 L / 0.2000 mols = 0.0167 L KOH = 16.7 mls KOH