2016韓國代購網 , 韓國代購化妝品 , 韓國代購批發 , 韓國代購教學---韓國代購/追加/寄貨

草酸氫鈉與酸性 KMnO₄ 的反應：
MnO₄⁻ + 8H⁺ + 5e⁻ → Mn²⁺ + 4H₂O
HC₂O₄⁻ → H⁺ + 2CO₂ + 2e⁻

MnO₄⁻ 的當量數 = 0.1 x (40/1000) = 0.004
HC₂O₄⁻ 的當量數 = 0.004
HC₂O₄⁻ 的當量濃度 = 0.004 / (20/1000) = 0.2N
HC₂O₄⁻ 的體積莫耳濃度 = 0.2 / 2 = 0.1 M

草酸氫鈉與 KOH 的反應：
HC₂O₄⁻ → H⁺ + C₂O₄²⁻
OH⁻ + H⁺ → H₂O

HC₂O₄⁻ 的當量濃度 = 0.1 N
HC₂O₄⁻ 的當量數 = 0.1 x (20/1000) = 0.002
KOH (OH⁻) 的當量數 = 0.002
KOH 的體積 = 0.002 / 0.1 = 0.02 L = 20 mL

參考資料 賣女孩的火柴

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