KOHLRAUSCH FLASK Meaning and
Definition
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A Kohlrausch flask refers to a specialized glassware used in analytical chemistry to carry out conductivity measurements accurately. Named after the German physicist Friedrich Kohlrausch, the flask consists of a cylindrical body typically made of high-quality borosilicate glass. The apparatus is specifically designed to contain precise volumes of liquid samples for conductivity determination experiments.
The Kohlrausch flask possesses a long neck with a narrow opening and a stopper equipped with two electrodes. The electrodes are made of high-purity metals, typically platinum or gold, that are connected to conductivity measuring devices. This configuration ensures a consistent and stable current flow through the solution under investigation.
One of the key features of the Kohlrausch flask is its volumetric accuracy, which often has a calibration certificate to certify its precision. It is calibrated to ensure that the volume of the solution it holds is known with high confidence, allowing for precise calculations and comparisons during conductivity measurements.
The use of a Kohlrausch flask is commonly seen in the determination of molar conductance, specific conductance, and related electrical properties of various electrolyte solutions. The flask's shape, materials, and construction ensure proper containment of the solution, minimizing unwanted electrolyte leaks or evaporation that could affect the accuracy of the conductivity measurements.
In summary, a Kohlrausch flask is a glass apparatus with a precise volume capacity, long neck, and two electrodes, used for reliable and accurate conductivity measurements in analytical chemistry.
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Etymology of KOHLRAUSCH FLASK
The word "Kohlrausch flask" is named after Friedrich Kohlrausch, a German physicist and chemist who lived from 1840 to 1910. He made significant contributions to the fields of physical chemistry and electrochemistry. The flask is named after him due to his work on conductivity measurements and the development of the Kohlrausch law, which describes the molar conductivity of electrolytes.
