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Dehydration of sulfuric acid

Time: 2018-10-18 15:31 Source: unknown Author: chuguan click: Times
Sulfuric acid tank manufacturers introduce the dehydrating dehydration of sulfuric acid refers to the removal of non-free water molecules by concentrated sulfuric acid or the removal of organic matter according to the hydrogen-oxygen composition ratio of water.

Desulfurization of sulfuric acid tank manufacturers
Dehydration refers to the process in which concentrated sulfuric acid removes non-free water molecules or removes the oxygen and hydrogen elements in organic matter according to the hydrogen-oxygen atomic composition ratio of water. As far as sulfuric acid is concerned, dehydration is a property of concentrated sulfuric acid, not dilute sulfuric acid. Concentrated sulfuric acid has dehydration and strong dehydration properties. It is removed according to the composition ratio of water during dehydration. The process of dehydration of material by concentrated sulfuric acid is a chemical change. During the reaction, concentrated sulfuric acid takes hydrogen and oxygen atoms in the water to be dehydrated according to the ratio of the number of hydrogen atoms in the water molecule (2: 1) or removes non-free crystal water. , Such as copper sulfate pentahydrate (CuSO4 · 5H2O).
Concentrated sulfuric acid quickly erodes through towels. The materials that can be dehydrated by concentrated sulfuric acid are generally organic substances containing hydrogen and oxygen. Among them, organic substances in sucrose, wood chips, paper scraps, and cotton are dehydrated to form black charcoal. This process This is called charring. A typical charring phenomenon is the brown bread reaction of sucrose. Put 20g sucrose in a 200mL beaker, add a few drops of water, add an appropriate amount of water, and stir well. Then add 15 mL of 98% concentrated sulfuric acid and stir quickly. Observe the experimental phenomenon. It can be seen that sucrose gradually turns black, and its volume expands to form a loose and porous sponge-like carbon. The reaction exotherms and can smell irritating gases.

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