dilutions

Question 1

diluting a solution

Answer 1

• pipette 25cm3 of original solution into a 250cm3 volumetric flask
• make up to the mark with distilled water using a dropping pipette for last few drops
• invert flask several times to ensure uniform solution

Question 2

why is a volumetric pipette more accurate than a measuring cylinder?

Answer 2

smaller uncertainty

Question 3

how do you calculate new diluted concentration?

Answer 3

original diluted concentration = original concentration x (original volume/new diluted volume)