IS Ca(OH)2 STRONG OR WEAK BASE. Share with your friends Share 0 veena Vasandani answered this Calcium hydroxide, Ca(OH)2, is a strong base. It dissociates completely into Ca2+ and OH- ions in aqueous solution. It is, however, sparingly soluble in water. 5 View Full Answer Rashi Chaubey answered this Ca(OH)2 is a strong base but not very soluble. 2