4. You use a volumetric pipette to take 10 mL of a stock
solution of KMnO and add water to make a more dilute
solution in a 100 mL volumetric flask. Is there more
potassium permanganate in the volumetric pipette or
the 100 mL of solution? Justify your answer
1 answer
You draw 10 mL of the KMnO4 solution into the pipette and transfer all of it to a 100 mL volumetric flask. Now the flask contains what was in the pipette, no more, no less. The concentration in the flask, because it is diluted, is smaller by a factor or 10 (100 mL/10 mL) but the amount of KMnO4 is the same.
1 answer