1. Who knows? You must know the mols HCl and mols CaCO3 before you can answer this question.
2. What is part B?
3. Strong base and weak acid, I would use phenolphthalein.
1. When the hydrochloric acid is added to the calcium carbonate, will there be an excess of
HCl(aq) or CaCO3(aq) or will there be stoichiometric equivalents of the two? Show your
calculations.
2. In this lab, you will use a 50mL buret and ~0.3M NaOH (aq). Calculate the mass of
potassium hydrogen phthalate, KHP, needed for the standardization of NaOH (aq) in Part B.
3. Which indicator would you choose to perform titration in lab and why? What color change do
you expect to see?
Relevant: document. li / 2ZBS
1 answer
1 answer