RP1: Exam Questions

Question 1

Suggest safety precautions, other than eye protection, that should be taken when filling the burette and dissolving sodium ethanedioate (toxic) in water.

Answer 1

Fill the burette below eye level using a funnel to prevent splashes.
Wear gloves to avoid skin contact with toxic sodium ethanedioate.

Question 2

State the colour change you would see at the end point of a titration with potassium manganate used in the burette and sodium ethanedioate in the flask.

Answer 2

Colourless to pink.

Question 3

Give 2 practical steps you must always do before taking the initial reading on a burette.

Answer 3

Remove the funnel from the burette
Ensure there is liquid in the space below the tap