1. Aqueous manganese(II) sulfate reacts with aqueous potassiumhydroxide to produ

Question

1.    Aqueous manganese(II) sulfate reacts with aqueous potassiumhydroxide to produce aqueous manganese(II) hydroxide and aqueouspotassium sulfate

2.    Aqueous manganese(II) hydroxide reacts with dissolved oxygento produce the brown precipitate MnO(OH)2.

3.    MnO(OH)2 reacts with sulfuric acid to producewater and aqueous manganese(IV) sulfate.

4.    Aqueous manganese(IV) sulfate reacts with aqueous potassiumiodide to produce aqueous manganese(II) sulfate and freeiodine

5.    Free iodine reacts with aqueous sodium thiosulfate to produceaqueous sodium dithionate(Na2S4O6) and aqueous sodiumiodide.

Explanation / Answer

We Know that :   1. MnSO4 ( aq.) + 2KOH ( aq.) --------> Mn ( OH )2 (aq.) + K2SO4 ( aq.) 2. Mn ( OH )2 ( aq.)  + 1 / 2 O2 --------> Mn O (OH)2 3.  Mn O (OH )2 + 2H2SO4 -------->  Mn(SO4 )2+ 3 H2O 4.  Mn(SO4 )2  (aq.) + 2 KI ( aq.) --------> MnSO4 + K2SO4 + I2    5.   I2 + 2Na2S2O3 --------> Na2S4O6 + 2 NaI    5.   I2 + 2Na2S2O3 --------> Na2S4O6 + 2 NaI

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