计量化学反应式的一个必要条件

A Prerequisite of Measuring Reaction Equation

原子数守恒和电荷守恒不能充分保证计量化学反应式系数的比例是唯一的。计量化学反应式系数比例为唯一的必要条件是;n-m≤2(氧化还原反应)或n-m≤1(非氧化还原反应),其中n、m为反应中物种数和元素数。

Neither mass balance nor oxidation-number change balance assures that the proportion of factors of a measuring-reaction equation is sole.The prerequisite to assure that is n-m≤2 ( oxidation-reacuction ) or n - m≤ 1 ( non-oxidation-reacuction ), the n and m respectively are the number of materials and elements in the reaction.