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Hydrogen Sulfide Gas Formula

闻硫之气,欲明其式。硫与氢合,成硫化氢。其式为$H_2S$,二氢一硫聚。此气具腐蛋之臭,性毒且危。于室可验之,硫酸与硫化亚铁合,置启普发生器中,微热则得。其气遇湿蓝石蕊试纸,纸变红,因其酸性。又可使醋酸铅试纸变黑,成硫化铅之故。识此式与性,于化学之研,大有益焉。



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