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Sodium Sulfide Hydrochloric Acid

某公,性好研物之化。一日,欲验硫化钠(Sodium Sulfide)与盐酸(Hydrochloric Acid)之应。遂置硫化钠于器,缓注盐酸。瞬时,见有臭蛋之味逸出,乃硫化氢之气也。其应之式为:$Na_{2}S + 2HCl = 2NaCl + H_{2}S↑$ 。公观此变,详录其象,思其理,于化之道,又进一层。此皆因好研物变,以科学之法求其真也。



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