Wilhelmy, Ludwig Ferdinand

One of the fathers of chemical kinetics, Louis Jacques Thenard, discovered hydrogen peroxide and measured its decomposition rates. He demonstrated for the first time, that rates of chemical reactions varied with the concentrations of the reactants. In later study Ludwig Ferdinand Wilhelmy investigated the inversion of cane sugar in the presence of acids and... 

Ludwig Ferdinand Wilhelmy (1812-1864), a German physicist published in 1850 an important paper on the kinetic on the inversion of sugar with adds (Wilhelmy, 1850, Fig. 5). 

The results of the first thorough kinetic study were published in 1850 by Ludwig Ferdinand Wilhelmy (1812-1864). He investigated the hydrolysis of sucrose in the presence of acid. This reaction could be followed with ease, since the optical rotation of the solution decreased and then changed its sign as the sucrose was hydrolysed (or inverted) to glucose and fructose. Wilhelmy showed that the rate of decrease of the sucrose concentration at a particular time was equal... 

Ludwig Ferdinand Wilhelmy (1812 1864) was born in Poland but studied in Berlin and Heidelberg. He was a skilled businessman who devoted himself to chemistry and physics. 

The Wilhelmy plate method (Ludwig Ferdinand Wilhelmy [1812-1864]) can be used to measure surface or interfacial tension at an air-liquid or liquid-liquid interface. In this method, a thin plate is oriented perpendicular to the interface, and the force exerted on it is measured. The plate is often made from glass or platinum which may be roughened to ensure complete wetting. The plate is cleaned thoroughly and attached to a scale or balance via a thin metal wire. The force on the plate due to wetting is measured via a tensiometer or microbalance and used to calculate the surface tension (y) using the Wilhelmy equation ... 

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