Answer :
Mass of kmno4 does she need to make the solution is 128.375 g.
Data:-
Volume = 2.5 L
Concentration = 0.325 M
Potassium permanganate (Molar mass )= 39 + 55 + (16 x 4) = 158 g
Calculate the moles of KMnO₄
Formula
Molarity = moles/volume
moles = molarity x volume
moles = 0.325 x 2.5
moles = .8125
Calculate the grams of KMnO₄
158 g KMnO₄ ------------------ 1 mol
x ------------------ .8125
x = (1.95 x 158)/1
x = 128.375 g
What distinguishes mole molarity from molality?
The amount of a solute in moles to all the liters of a solution is known as its molarity. The solvent and solute are both present in the solution. The ratio of the moles of a solute to the kilograms of a solvent is known as molality, on the other hand.
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