Why is the formula of POP written as CaSO4.1/2 H2O + 1 1/2 H2O ? Share with your friends Share 0 Mohit Gupta answered this Kindly refer to the following link:https://www.meritnation.com/ask-answer/question/q2-a-why-is-plaster-of-paris-written-as-caso4-1-2-h2o-how/acids-bases-and-salts/5440712 0 View Full Answer Sonalsruti Patro answered this the formula of Plaster of Paris is written asCaSO4.1/2 H2O + 1 1/2 H20.this is written because two formula units of CaSO4 share one molecule for water. 1
