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酒精(学名乙醇)能与水及大多数有机溶剂混溶,它对许多有机物和无机物都是一种优良的溶剂。在工商业上常用酒精和水的体积关系来表示酒精溶液的浓度,其体积百分率(即体积百分浓度,以Ⅴ%表示)叫做“度”。例如通常所说的95度的酒精,就是指100体积的酒精溶液中含有95体积的纯酒精(纯酒精又可称为100度酒精)。也有用质量百分率(W%)来表示酒精浓度的(即质量百分浓度)。例如沸点为78.15℃的恒沸点酒精溶液,其浓度为95.57%。这里所指的是质量为100份的
Alcohol (scientific name ethanol) is miscible with water and most organic solvents. It is an excellent solvent for many organic and inorganic substances. In industry and commerce, the volumetric relationship between alcohol and water is commonly used to express the concentration of an alcohol solution. The volume percentage (ie, the volume percentage concentration, expressed in V%) is called “degree”. For example, the so-called 95 degree alcohol refers to 100 volumes of alcohol solution containing 95 volumes of pure alcohol (pure alcohol is also called 100 degree alcohol). It also uses mass percentage (W%) to indicate alcohol concentration (ie, mass percentage concentration). For example, a constant boiling alcohol solution having a boiling point of 78.15°C has a concentration of 95.57%. This refers to a mass of 100