How many mL of 0.20 M hydrochloric acid is required to neutralize 100 mL of 0.80 M potassium hydroxide?
#"Volume of HCl"=400# #mL#.
Now the reaction is trivial here. It is nevertheless good practice to write the stoichiometric equation to show the
PS Sorry for shouting in the top answer; I still haven't got the hang of this editor.