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kangmierte
5 天
洗涤玻璃仪器,各有各的方法!
碱性高锰酸钾洗液 用碱性高锰酸钾作洗液,作用缓慢,适合用于洗涤有油污的器皿。 配法:取高锰酸钾(KMnO 4)4克加少量水溶解后,再加入10%氢氧化钠(NaOH)100mL。 纯酸纯碱洗液 根据器皿污垢的性质,直接用浓硫酸(HCL)或浓硫酸(H 2 SO 4)、浓硝酸(HNO 3 ...
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