Diluting A Solution

Question 1

1st step? (Pipette)

Answer 1

Pipette 25cm3 of original solution into a 250cm3 volumetric flask

Question 2

2nd step? (Make up)

Answer 2

Make up to the mark with distilled water using dropping pipette for the last few drops

Question 3

3rd step? (Invert)

Answer 3

Invert flask several times to ensure uniform solution

Question 4

Why is using a volumetric pipette more accurate than using a measuring cylinder?

Answer 4

It has a smaller uncertainty

Question 5

Why do you need to use a pipette?

Answer 5

To ensure the volume of the solution is accurately measured and doesn’t go over the line

Question 6

Does diluting a solution change the amount of moles of solute present?

Answer 6

No

Question 7

What is increased and what is decreased?

Answer 7

The volume of the solution has been increased
The concentration has been decreased

Question 8

New diluted concentration =?

Answer 8

Original concentration x original volume/new diluted volume