A chemist is about to perform a titration by adding a base to an acid. What is the most important reason for using a base instead of water to rinse out the burette?

If water remains in the burette, it mixes with the base added for the titration and dilutes it. That changes the base’s concentration, which can make the titration results inaccurate. Rinsing with the base helps prevent this dilution, so the correct choice is “to prevent dilution of the base, which may affect the results.”

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