11- Lab: Acid Base Titration
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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?
True
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?
C: A-, Na+ and H+
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.
B: H+ and A-
And indicator is used in a titration to show when _____. It does this by changing color.
An equal number of moles and acid base are present
Titration is a technique to determine the concentration of a solution using another solution of known concentration. True or false?
True
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?
False