Under normal atmospheric pressure boiling point alcohol is 78.3 ° C (for ethanol).It should be borne in mind that the temperature always remains unchanged even in the case where the heat is supplied continuously.This feature of the process due to the fact that the conversion of liquid substances into vapor as occurs when a certain fixed value for a given material temperature - heat of vaporization.
With increasing molecular weight of the boiling point of alcohol is increased, while the proportion has an inverse kind of alcohols, standing close in a row, from ethyl.Numerically, its value is much higher than at the same rate or hydrocarbon ethers that have the same molecular weight.Accordingly, this pattern extends to the derivatives of these substances.This property is due to the presence in alcohols molecular association due to presence of hydroxyl groups.
In many ways, the boiling point of alcohol is determined by its chemical structure.Then there exists a universal law: the greater part of the alcohol is different from the classical structure, the lower the boiling point.
When comparing the different boiling points of the alcohols with boiling points of the derivatives of these ethers is found a unique pattern - alcohol has almost abnormal in size, very high temperatures.
more legitimate is the dependence of the boiling point of the magnitude of the value of a particular molecular weight alcohol.For example, the boiling point of ethyl alcohol is 78.15 ° C with a molecular weight of 46.069.e. m. At the same time, the corresponding figures are respectively methyl at 64.7 ° C and 32.04 a.e. m. The same pattern is characteristic of all alcohols.
Hydrolysis alcohol is usually carried out when it reaches the boiling point, it is quite time-consuming process, which lasts about ten hours.
Such a parameter as temperature combustion alcohol largely determines the breadth of application of these compounds in industry and households.However, there should be considered as an aspect of this type of combustion.Combustion reactions are classified into four groups.The first type includes all of the combustion process which takes place due to entering of oxygen contained in the ambient air.It includes a combustion reaction of oil and alcohol.This process is expressed by the following formula: C2H5OH + 3O2 + 11,3 N2 = 2CO2 + 3H2O + 11,3N2.
Exploring this formula, it should be borne in mind that it does not reflect the full meaning of all chemical reactions that occur with the substances involved in the combustion reaction.The formula is made for reasons that air consists of oxygen and nitrogen, in the presence of inert gases, it is reset to zero.
option before us - the boiling point of alcohol - it causes multiple use.This use is known to be the most like the use of alcohols as combustible materials and material constituting the various types of motor fuel.For these purposes, generally used methanol, ethanol and butanol, which are produced worldwide on an industrial scale.Such production volumes due to their commercial availability and high market situation, moreover, the production in some cases, are used as indicators of the technological level of the criteria of the state.Individual process areas are the production of bio-diesel, solvents, paints and many other products, which is simply impossible to list in a short article.
