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.
Doctors often order medical tests for patients before surgery. These are called pre-operative or âpre-opâ tests. They include chest X-rays, blood and urine samples, and heart and lung tests. These tests can be helpful if you are having serious surgery, especially if you have health problems.