Dilutions and Concenrtration Experiment Flashcards
What is Dilution ?
Dilution is the process of decreasing the concentration of solutes in a solution by adding more solvent
What is Concentration ?
Concentration is the process of increasing the concentration of solutes in a solution.
What did we need to do from the results provided ?
Calculate the mean and standard deviation
Prepare a graph of sample aginst
How did you covert the millilitres to micro litres ?
0.4 ml: 400ul
0.2ml:200ul
etc
ml x1000=1ul
Working out dilution ?
Amount required /dilution factor
Need to make 4ml of 1:8 dilution
=4mls/8=0.5mls=500ul
Examples From Practical ?
- 2 - 1mL =1000ul
- 4ml=400ul
- 2ul=200ul
Calculate the volume of neat food dye and diluent required to prepare the dilution below in a final volume of 2 ml.
Dilution : 1:2
2/2=1ml=1000ul
1mlx1000=1000ul
Dilution :1;100
2/100=0.02
0.02x1000=20ul
What does it mean to dilute a solution ?
To dilute a solution means to add more solvent without the addition of more solute. The resulting solution is thoroughly mixed so as to ensure that all parts of the solution are identical.
What happens when you dilute a acidic solution ?
When an acidic solution is diluted with water the concentration of H + ions decreases and the pH of the solution increases towards 7.
What does dilution do ?
Its the addition of solvent decreasing the concentration of the solute in the solution .
What does the concentration do ?
Concentration is the removal of solvent, which increases the concentration of the solute in the solution. … as the dilution equation.
The volumes must be expressed in the same units.
What happens add more water ?
adding more water would decrease the concentration. But solutions do not only take place in liquids.
What happen as you increase the dilution ?
By increasing the dilution, you are decreasing the concentration of the ions that come from the acid/base, and so decreasing the acidity/basicity. –
