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.
Preoperative care. (Redirected from Pre-op) Preoperative care refers to health care provided before a surgical operation. The aim of preoperative care is to do whatever is right to increase the success of the surgery. At some point before the surgery the health care provider will assess the fitness of the person to have surgery.
In Your ToolBox: Pre-Tests. The most common form of preassessment is a pencil and paper test or quiz such as an end of. chapter or end of unit test administered at the beginning of the instructional sequence. The. primary purpose of this type of instrument is to gather information about a student's readiness.