Experimental Errors Flashcards
1
Q
Errors in a titration
A
Misjudging the colour of the indicator near the end point
Misreading the volume
Using contaminated solutions
Using solutions of wrong concentration
Using wrong amount of indicator
Rinsing burette with wrong solution
Not filling burette properly
Not transferring all solid/liquid when preparing samples
Not transferring all the volume
Titrating at wrong temperature (other than glassware was calibrated for).
Losing solution - too vigorous swirling can end in splashing
Leaking burette
2
Q
Do measurements need to be taken at even increments?
A
No. As long as readings taken carefully then any trends will still evident.
3
Q
What are some potential changes to improve cell experiments?
A
GENTLY stirring the electrolyte.
