Volume of K_2 SO_4 to be added to achieve a K^+ ion concentration of 0.5 mol.dm^-3?

4.2 You have a 500 ml container in which to prepare a solution of potassium permanganate (KMnO_4). 4.2.1 What mass of KMnO_4 is needed to make a solution with a concentration of 0,2 M? 4.2.2 Ignoring the container size, calculate the volume (in ml) of K_2 SO_4 that must be added to the KMnO_4 to achieve... show more 4.2 You have a 500 ml container in which to prepare a solution of potassium permanganate (KMnO_4).

4.2.1 What mass of KMnO_4 is needed to make a solution with a concentration of 0,2 M?

4.2.2 Ignoring the container size, calculate the volume (in ml) of K_2 SO_4 that must be added to the KMnO_4 to achieve a K^+ ion concentration of 0,5 mol⋅dm^(-3).
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