When conducting a titration of an acid by adding base to the equivalence point, it is appropriate to use an indicator which has A) a pK_a = 7.00 B) a color change at a pH close to the pH at the equivalence point C) a color change at a pH considerably lower than the pH at the equivalence point D) a color change at a pH considerably higher than the pH at the equivalence point E) an easily detected color change regardless of the pH where the change occurs

Question

Quizplus · Accepted Answer

An indicator should have a color change pH value that is close to the pH at the equivalence point. This will allow for a more accurate determination of the equivalence point. A pK_a value of 7.00 (choice A) is not relevant in this case. Choice C and D are not appropriate as the color change should occur close to the equivalence point. Choice E is not specific enough and may not provide the accuracy needed for the titration.

When Conducting a Titration of an Acid by Adding Base