過錳酸鉀的氧化還原滴定 - 國立臺灣大學

4 3 加約100 mL 1 M H2SO4(aq)溶解之。 4 將Na2C2O4 溶液加熱到80~90℃，在攪拌 狀態下以KMnO4(aq)滴定。 KMnO4(aq)必須緩慢加入，等粉紅色消失 後再加入下一滴。溫度若低於60℃則須 重新加熱，當粉紅色維持15~20 秒不消 失，即滴定終點。

一、簡單蒸餾

常用的方法之一。蒸餾的方式，包括：簡單蒸餾（simple distillation ）、分餾 （fractional distillation ）、減壓蒸餾（vacuum distillation ）及蒸汽蒸餾（steam distillation）等。 簡單蒸餾可用於檢測液體的純度，因為一個純物質，在定壓下必有一個固定 的沸點。

  Fractional, Distillation, Fractional distillation

Chemical Equilibria and Rates of Manganese 'Oxidation

+ 7 state (permanganate, MnO4~) are commonly utilized in tl e labo­ ratory, and solutions of permanganate have sufficient stability to be used in oxidation-reduction titrations. The oxidizing power of per­ manganate, however, is great enough to release oxygen froir water, although ordinarily the reaction is very slow.

  Oxidation, Manganese, Permanganate

Iron and Manganese Removal

OXIDATION • Aeration • Chlorine (gas chlorine, sodium hypochlorite, calcium hypochlorite, on- site generation of sodium hypochlorite) • Potassium Permanganate • Sodium Permanganate • Chlorine Dioxide Ozone • Ozone • Biological Filtration CLARIFICATION • Conventional Sedimentation • • Plate Settlers • Tube Settlers

  Oxidation, Permanganate

Worksheet 25 - Oxidation/Reduction Reactions 0 II +1 +2 -2 -1

Worksheet 25 - Oxidation/Reduction Reactions Oxidation number rules: Elements have an oxidation number of 0 Group I and II – In addition to the elemental oxidation state of 0, Group I has an oxidation state of +1 and Group II has an oxidation state of +2. Hydrogen –usually +1, except when bonded to Group I or Group II, when it forms hydrides, -1. ...

  Oxidation

Example Exercise 17.1 Calculating Oxidation Numbers for …

Calculating Oxidation Numbers for Sulfur. We can begin by recalling that the charge on an ion corresponds to the sum of the oxidation numbers. (a) In S. 2–, the oxidation number of sulfur is – 2. (b) In SO. 3 2–, the polyatomic anion has a charge of 2 –. We assign oxygen an oxidation number of – 2 and write the equation (c) In SO. 4 2–

  Exercise, Example, Number, Oxidation, Calculating, Example exercise 17, 1 calculating oxidation numbers for

Potassium Permanganate

Potassium Permanganate Safety Data Sheet according to Federal Register / Vol. 77, No. 58 / Monday, March 26, 2012 / Rules and Regulations Date of issue: 02/04/2014 Revision date: 02/13/2018 Supersedes: 02/13/2018 Version: 1.1

  Potassium, Potassium permanganate, Permanganate

Potassium Permanganate

Potassium Permanganate Safety Data Sheet according to Federal Register / Vol. 77, No. 58 / Monday, March 26, 2012 / Rules and Regulations Date of issue: 02/04/2014 Revision date: 02/13/2018 Supersedes: 02/13/2018 Version: 1.1

  Potassium, Potassium permanganate, Permanganate

Decomposition of Hydrogen Peroxide by Various Catalysts

complex of iron with oxidation number +V is primarily formed by the reaction of Fe3+ with H2O2. This complex reacts with another H2O2 molecule to water and oxygen thereby re-forming Fe3+: 3 III 2 V 3 3++++ ++++⎯⎯⎯⎯⎯ + 22→+ + 22 2 2 2 HO Fe H O [Fe OOH] H [Fe O] H O Fe 2H O O .

  Oxidation, Hydrogen, Various, Peroxide, Catalysts, Decomposition, Decomposition of hydrogen peroxide by various catalysts

Redox Titration

different color at reduction and oxidation state. • Non redox indicator – change color when excess amount of titrant exists, e.g. Starch changes to deep blue color when excess amount I. 2. remains

  Oxidation, Titrations, Redox titration, Redox

Balancing Redox Reactions: Acidic Conditions

- In the example given, the two reactants are permanganate (MnO4-) and iron (Fe2+), and the products are manganese (Mn2+) and iron (Fe3+). It is given that the reaction is occurring under acidic conditions, so we add H+ ions to the left side and water on the right side to balance the oxygen atoms that are present.

  Permanganate