Explain how would you prepare 0.10 M KMnO4 (aq) starting with a 0.050 M KMnO4 (aq) stock solution?

Question

Topic: Inorganic Chemistry - DILUTIONS

Answer 1

The only way is to concentrate the stock solution, done by evaporating off the solvent until the volume has halved.

Answer 2

Starting with a 0.050 M KMnO4 stock solution I can prepare more diluited solution so I thing that this is impossible

Answer 3

You can make it more conc by adding more Potassium Permanganet in that stock solution. 0.05 M solution contains 7.9 gm of KMnO4 per litre. You need 15.8 gm to make it 0.1 M Solution. So you need to add (15.8-7.9)= 7.9 gm more KMnO4.