反应进度是用来描述反应进行的程度的量,用符号ξ表示。它的定义是:对于反应O=∑_(BνB)B (1)来说, dξ=ν_B~(-1)dn_B (2)式中B是包含在反应中的分子或原子的符号;ν_B为物质B的化学计量数,在反应方程式(1)中,反应物的化学计量数为负,而产物的则为正;n_B表示物质B的物质的量。反应进度的单位是摩尔,在反应开始时ξ=0,反应按照反 The progress of the reaction is an amount used to describe the degree of progress of the reaction and is represented by the symbol ξ. It is defined as: For the reaction O=∑_(BνB)B (1), dξ=ν_B~(1)dn_B (2) where B is the symbol of the molecule or atom contained in the reaction; ν_B is The stoichiometric number of substance B, in the reaction equation (1), the stoichiometry of the reactant is negative and the product is positive; n_B represents the amount of substance of the substance B. The unit of reaction progress is the mole, at the beginning of the reaction ξ = 0, the reaction is in accordance with the