RE: What does an &quot;ad hoc&quot; job mean? I went to an interview yesterday for a salesperson and the interviewer said that the role was an ad hoc role.I should have asked what it meant (because it wasn&#39;t in the job description when I applied) but I didn&#39;t want to seem like I didn&#39;t know what I was doing so I didn&#39;t...E: What does an &quot;ad hoc&quot; job mean? I went to an interview yesterday for a salesperson and the interviewer said that the role was an ad hoc role.
pH - (from potential of Hydrogen) the logarithm of the reciprocal of hydrogen-ion concentration in gram atoms per liter; provides a measure on a scale from 0 to 14 of the acidity or alkalinity of a solution (where 7 is neutral and greater than 7 is more basic and less than 7 is more acidic);
The Simple Definition. pH is a logarithmic measure of hydrogen ion concentration, originally defined by Danish biochemist S ren Peter Lauritz S rensen in 1909 [ 1 ]. pH = -log[H+]. where log is a base-10 logarithm and [H+] is the concentration of hydrogen ions in moles per liter of solution. According to the Compact Oxford English Dictionary, the p stands for the German word for power, potenz, so pH is an abbreviation for power of hydrogen [ 2 ].