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.
Pre-cum is the pre-ejaculate fluid that can be released from the penis during sexual activity. It is usually released before the male reaches orgasm, which results in the ejaculation of semen.Pre-cum prepares the urethra for the semen and helps in lubrication during sexual intercourse.Also the pre-cum may contain sperm. Since the pre-ejaculate can contain sperm, a pregnancy can occur if the man's pre-cum comes in contact with the woman's vaginal canal.However, there is inconclusive evidence as to where the sperm in the pre-ejaculate comes from.ince the pre-ejaculate can contain sperm, a pregnancy can occur if the man's pre-cum comes in contact with the woman's vaginal canal.