What is pH?

Answer 1

PHS stands for the Public Health Service also referred to as the United States Public Health Services (USPHS).

The U.S. Public Health Service Commissioned Corps is an elite team of close to 6,500 full-time, well-trained, highly qualified public health professionals dedicated to delivering the Nation's public health promotion and disease prevention programs and advancing public health science. Driven by a passion for public service, these men and women serve on the frontlines in the Nation's fight against disease and poor health conditions.

As one of America's seven uniformed services (along with the Army, Navy, Air Force Marines, Coast Guard, and National Oceanic and Atmospheric Administration), the USPHS, also referred to as the Commissioned Corps, fills essential public health leadership and service roles within the Nation's Federal Government agencies and programs. The Corps has officers in many professions, including:

Physician

Dentist

Nurse

Pharmacist

Dietitian

Engineer

Environmental health officer

Mental health specialist, including clinical psychologist and clinical social worker

Health services officer

Scientist/researcher

Therapist (includes occupational therapy, physical therapy, speech-language pathology, and audiology)

Veterinarian

The Commissioned Corps is an essential component of the largest public health program in the world. Corps officers may apply to a variety of positions throughout the U.S. Department of Health and Human Services (HHS) and certain non-HHS Federal agencies and programs that offer exciting professional opportunities in the areas of disease control and prevention; biomedical research; regulation of food, drugs, and medical devices; mental health and drug abuse; health care delivery; and international health. Corps officers may apply to vacancies within the following organizations. Contact information for each Commissioned Corps liaison follows agency descriptions. Applicants to the Corps are encouraged to subscribe to the Commissioned Corps Jobs Listeserv, located at http://dcp.psc.gov/v_maillist.asp.

Answer 2

PH is short for the power of Hydrogen. It's the measure of acidity or alkalinity in a solution. In pure water at 77°F, The hydrogen ions are equal to the concentration of hydroxide ions. This is the "neutral" marking and means the pH level is 7.0.

In solutions where the hydrogen ions exceed the concentration of hydroxide ions, the pH falls below 7.0 and is an acid.

In solutions where the hydroxide ions exceed the concentration of hydrogen ions, the pH rises above 7.0 and is a base. The pH of a substance tells if it's an acid, neutral, or a base.

With all deference to the asker and to the previous answerer, technically substances don't have pH's. Aqueous solutions have pH's, and the pH tells you (on a logarithmic scale) the concentration of H+ (or more precisely H3O+) in that solution. A substance is an acid if it lowers the pH of a solution when it is dissolved. It does this by donating protons (H+'s) to water molecules to create more H3O+. A substance is a base if it increases the pH of a solution by accepting a proton from water molecules to form OH-. H3O+ and OH- are in equilibrium with each other in solution, so the more OH- you create, the less H3O+ will be in solution and the higher the pH. So a better answer to the question is that "The pH of a solution tells you if its an acidic, neutral, or basic solution."


pH is the cologarithm of the activity of dissolved H+ (or sometimes written H3O+) ions (aka. Protons) in a solution, and measures the acidity/basicity of it. The Danish chemist Søren Peder Lauritz Sørensen came up with the idea in 1909.

* The p in pH has an unknown meaning, but is accepted to mean 'power' or 'potential'. * A pH of 7.0 is said to be neutral, and pure water in standard conditions is a pH of 7. * A pH of less than 7 is acidic, and a pH of more than 7 is basic. * The pH scale usually ranges from 0 to 14, but negative values have been observed. * H2SO4 (sulfuric/battery acid) is extremely acidic, and NaOH (caustic soda/lye) is extremely basic. * pH= -log[H+]



The pH scale measures the hydrogen ion concentration of a substance. A low pH indicates an acidic substance with many H ions while a high pH indicates a basic substance containing few H ions.
ph is the abbreviation for Philippines.

Answer 3

A measurement indicating how acidic a solution is.

APEX 2022