Respuesta :
The first step in the titration process is; A measured volume of an acid or base of (un)known concentration is added to a flask. The second step is several drops of indicator are added to the solution, and the third step is ; the measured volumes of a base or acid of known concentration are added, using a burette, until the indicator just barely changes color (end point or the equivalence point).
The answer is A. Clean and rinse the burette with water
