11- Lab: Acid Base Titration

Question 1

The titration should be stopped when the solution in the flask changes color in the new color remains even when the solution is gently shaken. True or false?

Answer 1

True

Question 2

A student stops a titration of before the equivalence point is reached. If NaOH is being added to an unknown acid, HA, what ions are present in the clear solution in the flask?

Answer 2

C: A-, Na+ and H+

Question 3

To perform a titration, HA, and acid of unknown concentration, is placed in a flask. Before any NaOH is added, what ions are present in the flask.

Answer 3

B: H+ and A-

Question 4

And indicator is used in a titration to show when _____. It does this by changing color.

Answer 4

An equal number of moles and acid base are present

Question 5

Titration is a technique to determine the concentration of a solution using another solution of known concentration. True or false?

Answer 5

True

Question 6

At the equivalence point, equal (stoichiometric) numbers of moles of acid and base are present in the flask and the pH should be less than seven. True or false?

Answer 6

False