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Write The Formula For Aluminum Acetate
求醋酸铝之化学式
今欲得醋酸铝之化学式。醋酸根,其离子符号为$CH_{3}COO^{-}$,铝离子符号为$Al^{3 + }$。
化合物中,阴阳离子电荷总数需相等。设醋酸铝化学式为$Al_{x}(CH_{3}COO)_{y}$,则有$3x = y$。
为使$x$、$y$为最简整数比,取$x = 1$,$y = 3$,故醋酸铝之化学式为$Al(CH_{3}COO)_{3}$ 。
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