Log inSign up for FREE
Library

Introduction to Titration

Last updated 6 months ago
5 questions
A. Add 15 drops of vinegar to a small cup.

B. Add 3 drops of phenolphtalein to the cup.

C. Add drops of baking soda until you notice a color change in the cup that does not turn back to clear. Make sure you are swirling the cup, by holding the cup and swirling it. DO NOT TOUCH THE DROPPER TO THE LIQUID.
1

Explain what you saw in step C. Make sure to state what happened to the pH, from step A to step C.

1

Explain what happened to the H3O+ concentration from step 1 to step 3.

1

Explain what happened to the OH- concentration from step 1 to step 3.

D. Add drops of vinegar into the cup till you notice a change again. Continue to swirl. DO NOT TOUCH THE DROPPER TO THE LIQUID.
1

What happened as you added more vinegar? Explain in terms of the pH.

E. In a new cup, count 15 drops of vinegar and 2 drops of phenolphtalein. Count exactly how many drops it takes of baking soda solution for it to stay pink.
1

How many drops did it take?