KMnO4法测定软锰矿中MnO2的含量时,MnO2与NaC2O4的反应必须在热的()条件下进行。A、酸性B、弱酸性C、弱碱性D、碱性
KMnO4法测定软锰矿中MnO2的含量时,MnO2与NaC2O4的反应必须在热的()条件下进行。
- A、酸性
- B、弱酸性
- C、弱碱性
- D、碱性
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