PH
The pH symbol is known as pH, pH, or hydrogen force, which determines whether the fluid is acidic, acidic or neutral. Fluids are highly acidic if they are higher than 7, while the pH is low If it is less than 7, it is necessary to know the pH of any solution through the use of the pH index, and in this article we will know you more about it.
What PH means
The pH is defined by the use of the logarithmic law, which aims to determine the value of the pH, which is a value without units.
PH History
In 1909, the Danish scientist Søren Sorensen introduced hydrogen ion to pH + to concentrate hydrogen ions (Cp = 10-pH +). He set the pH values by using electrical measurements. The method of writing pH to the present time became the pH value, H is used to express hydrogen ions, and the p is used randomly as an indicator of its measurements on liquids, and then the letter p turns in the pH to the word Potenz This means that the process is based on a specific measurement method that must be followed. Reference solutions are usually used with fixed specifications, so that the pH value is determined for all laboratories.
Methods of measuring pH
The method of the filter
Based on the filling of a glass membrane with an orderly solution, then immersing it in the solution to be measured. Due to the tendency of the hydrogen ions to adhere to the thin layer of silicate to the glass surface, an electric voltage will be generated as a result of the PH difference between inside and outside the glass ball. The driving force is measured and measured using two poles One in the glass ball and the other outside in the sample solution to measure the pH.
Field sensitive field
The work of the field mole is similar to the work of the glass ball pole, where the hydrogen ions accumulate on the sensitive surface of the input membrane of the precipitator, and an electrical voltage is created. This changes the passage of the current in the transistor. This change in current to an electrical signal can be done by using an appropriate device, The direct value of PH.
Chromatic Detector
PH can be determined or determined by using a color comparison method by using colored reagents.
The importance of pH in humans
PH is limited in human blood and in the rest of its cell fluids. It is controlled in the blood through a complex system of dissolved carbon dioxide solution, in addition to proteins and salts. This solution is known as the blood regulator.
The value of PH in the blood on the hemoglobin, the lower the value of PH decreased the amount of oxygen in it, and if the reduction of carbonic acid in the blood during breathing less contain hemoglobin oxygen, and when the carbon dioxide out of the lungs increase the value of PH in the blood, To contain oxygen.