Negative logarithm of hydrogen

The pH of a solution indicates the effective concentration of hydrogen ions, H+. The units of pH are the negative logarithm of hydrogen ion concentration, expressed in moles per liter ... 

The negative logarithm of hydrogen ion concentration was defined by Sorensen S as the pH.t Sorensen did not actually measure hydrogen ion concentrations, but something more nearly related to activities. He measured the emf of galvanic cells such as... 

When the concept of thermodynamic activity became established, Sorensen and Linderstrom-Lang defined the term puh as the negative logarithm of hydrogen ion activity. Thus... 

Electrolyte can normally be classified into three categories based on its pH value such as acidic, neutral, and alkaline. pH is the negative logarithm of hydrogen ions concentration in the solution. If the electrolyte solution has a pH value less than 7 then the solution is acidic. If the electrolyte solution has pH value equal to 7 then it is neutral solution. If the pH value exceeds 7 then the electrolyte solution is alkaline. Neutral electrolytes such as NaCl, NaNOa are commonly used in EMM. However, for microhole drilling acidic electrolytes are preferred. 

Sorensen, Soren Peter Lauritz (1868-1939) Danish biochemist in Copenhagen suggested a convenient way of expressing acidity - the negative logarithm of hydrogen ion concentration (pH). 

The term pH is commonly interpreted as the negative logarithm of hydrogen or rather hydronium ion activity in a solution ... 

Acidity is defined in terms of the pH scale, where pH is the negative logarithm of the hydrogen ion [H ] concentration. 

In 1909, Danish biochemist Soren Sorenson first introduced the pH concept. pH is defined by the negative logarithm of the hydrogen ion activity ... 

Eq. 1 AGbind, free energy of binding log D14, logarithm of the distribution coefficient at pH 7.4 pATa, negative logarithm of the dissociation constant HBD, number of hydrogen bond donors. 

Non-redox equilibria are expressed in terms of equilibrium constants based on activities, whereas Eh is given in volts. To compare and combine redox equilibria with other non-redox equilibria it is often convenient to use another term, pe. pe is the negative logarithm of electron activity based on the hydrogen half cell in which the redox activity is set at unity. Because pe is expressed as mol L , this term enables redox equilibria and other equilibria to be combined and expressed in terms of a single constant. 

The symbol p denotes negative logarithm of. For a precisely neutral solution at 25 °C, in which the concentration of hydrogen ions is 1.0 X 10-7 m, the pH can be calculated as follows ... 

The term pH is used to express the concentration of free H30+ in a sample and results from dissociation of the acids present. pH is defined as the negative logarithm of the hydrogen ion concentration, shown below, and can span a range of 14 orders of magnitude. 

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