TITRATION ERRORS

Two typical titration errors

  1. On the left an air bubble was left in the tip of the buret in filling the buret. What is the effect on the results if....
  2. On the right is a drop hanging from the tip.
    What is the effect on the results if....

    The MENISCUS and PARALLAX ERRORS

The center picture shows a typical meniscus and reads ..........15.46 mL

On the right is an illustration of PARALLAX ERROR.
Clearly the camera is looking at the meniscus from above. This is confirmed by the full circles at the 15 and 14 mL marks.
With this error the buret reads.............................................. 15.31 mL
This is a....................................... 1% error

RWK 1997