Posted on June 2, 2021 by sarah yalton11. How many liters of a 0.50 M HCl solution are needed to neutralize 1.5 liters of 0.25 M Ca(OH)2? 11. How many liters of a 0.50 M HCl solution are needed to neutralize 1.5 liters of 0.25 M Ca(OH)2?