- Messages
- 924
- Reaction score
- 1,096
- Points
- 153
Take a measuring cylinder. Place it on a balance. Zero the balance. Add distilled water to the measuring cylinder until 30g of water has been poured. Now zero the balance again. Add KCl solid, carefully, so that 2.238g are added. This means you added 0.03mol of KCl.
The molality of this solution (stir it) will be 1mol/kg. Lets call this your Ultra Solution (US)
Now we will do serial dilution.
Take five more measuring cylinders. Add 0g of distilled water to first, 2g to second, 4g to third, 6g to fourth, and 8g to fifth.
Now take your Ultra Solution and add 10g of it to first, 8g to second, 6g to third, 4g to fourth, and 2g to fifth.
Stir them all.
Note that we've used 50g of distilled water so far.
Your first cylinder has molality 1.0mol/kg
Second one is 0.8mol/kg
Fourth is 0.4mol/kg
Last one is 0.2mol/kg
Use the remaining water to clean your apparatus
Nah just kidding you could use it to repeat your experiment or just make larger volumes of the above solutions.
Last edited: