NaOH + Na2HPO4 --> Na3PO4 + H2O (aka tribasic sodium phosphate) Of course, once all the hydrogen is consumed there is no further reaction with sodium hydroxide. In general, adding sodium hydroxide to a solution of any of the sodium phosphates will change the pH.
Pre-operative adjective Referring to the logistics of preparing for a surgical procedure/operation. See Pre-op time noun. 1. A popular term for all forms of careâeg, medication provided to a Pt prior to a surgical intervention.
Definition of pre-. 1a (1) : earlier than : prior to : before Precambrian prehistoric (2) : preparatory or prerequisite to premedicalb : in advance : beforehand precancel prepay. 2 : in front of : anterior to preaxial premolar. preadmission. preadult. preagricultural. preanesthetic.