標題: [化學]清潔劑 [打印本頁]

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作者: 大仔    時間: 2009-2-16 19:18     標題: [化學]清潔劑

點解肥皂不能在清潔酸性液體時使用?!
唔該!!!

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作者: 心心    時間: 2009-2-16 21:26

R-COO- + H+  <=> R-COOH

so it lost its cleaning ability

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