Final answer:
The top of the buret should always be filled to at or below shoulder level to ensure proper safety and accurate volume measurement for titrations.
Step-by-step explanation:
When it comes to filling a buret for titration analysis, it is important to follow proper safety and precision procedures. The correct option for the question about the height at which to fill a buret is: c.
When being filled, the top of the buret should always be at or below shoulder level.
This guideline helps in safely manipulating the buret and ensures that you can accurately read the volume of the liquid at eye level, avoiding parallax error.
When reading the volume of a liquid in a buret, it is essential to look at the bottom of the meniscus at eye level to get an accurate reading.
A buret permits volume measurements to the nearest 0.01 mL and is a crucial tool in delivering specific volumes of liquid with precision, which is vital during a titration process.