搜索 - 科创

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这个反应很复杂的，好像是CuSO4 + Na2S2O3 + H2O == Cu(OH)2↓+ S↓+ SO2↑+ Na2SO4不过如果一般情况下还会有一点亚硫酸铜生成

HgS 三画 [三仙丹]HgO [干冰]固态CO2 [土]Fe2O3含有粘土 [土红、土铁]Fe2O3 [土硝]KNO3由土中熬制者 [大理石]CaCO3 [大苏打]Na2S2O3

2.Na2S2O3不是基准物，因此不能直接配制标准溶液.配制好的Na2S2O3溶液不稳定，容易分解，这是因为在水中的微生物作用下，CO2,空气中的O2发生反应。

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