a solution of permanganate is standardized by titration with oxalic acid (h2c2o4). it require 28.97 ml of the permanganate solution to react completely with 0.1058g of oxalic acid. start off by writing a net ionic equation and balancing with the appropriate method. what is the molarity of the permanganate solution?

Respuesta :

The ionic equation:

2Mn[tex]O^{- }_{4}[/tex] + 5 H2O4 + 6 [tex]H^{+}[/tex]⇄  2[tex]Mn^{2+}[/tex] + 10 CO2 + 8H2O

Molarity of KMnO4 is 0.0229M

Molarity:

Molar concentration is a measure of the concentration of a chemical species, in particular of a solute in a solution, in terms of the amount of substance per unit volume of solution.

Formation of  the ionic equation:

2 × ( Mn[tex]O^{-}[/tex]4)  + 8 [tex]H^{+}[/tex] + 5[tex]e^{-}[/tex][tex]Mn^{2+}[/tex]  + 4 H2O )

5 × ( H2C2O4  ⇄ 2CO2  + 2[tex]H^{+}[/tex]  + 2[tex]e^{-}[/tex] )

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2Mn[tex]O^{-} _{4}[/tex]  + 5 H2C2O4  + 6[tex]H^{+}[/tex] ⇄ 2M[tex]n^{2+}[/tex] + 10 CO2 + 8 H2O

Now we have to find the molarity of the permanganate,

Volume = 28.97ml

mass = 0.1058g

molecular mass = 0.105 × 1000/ 28.97

                          = 3.62g

molecular mass = 158

Molarity of the solution = mass/ molecular mass

                                       = 3.62/ 158

                                       = 0.0229M

Therefore the ionic equation is 2Mn[tex]O^{- }_{4}[/tex] + 5 H2O4 + 6 [tex]H^{+}[/tex]⇄  2[tex]Mn^{2+}[/tex] + 10 CO2 + 8H2O and the molarity of the permanganate solution is 0.0229M.

To know more about the molarity of the solution refer to the link given below:

https://brainly.com/question/26873446

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