Final answer:
In a titration experiment, when the burette is full of H₂SO₄ and a stopwatch is ready, you should begin the titration by slowly adding the acid to the base, swirling the flask, and stopping when the indicator changes color. Record the volume of acid used and the time taken to reach the endpoint.
Step-by-step explanation:
When you have a stopwatch and the burette is completely full of H₂SO₄ (sulfuric acid), the task at hand seems to be related to a titration experiment. You and your partner should be ready to begin the titration process. This typically involves the following steps:
- Ensure the stopcock is closed before pouring the acid into the burette.
- Start the stopwatch the moment you begin to add the acid to the receiving solution, which could contain a base like sodium hydroxide (NaOH).
- Swirl the flask constantly to ensure thorough mixing of the reactants.
- Stop adding acid the moment the indicator changes color, and record the time on the stopwatch along with the volume of acid used.
This information will help you explain the reaction's progress, calculate the reaction rate, or determine the endpoint of the titration, which is critical for accurate measurements and conclusions. After the base is fully titrated with the acid, you can write the balanced equation for the reaction that took place, calculate moles, and discuss the mole ratio from the balanced equation to determine the amount of product formed.