Follow the link below to the simulation:
https://virtual.edu.rsc.org/titration/experiment/2

Then click on:
Quickstart > Titration Level 1


Comprehension:
1. Hydrochloric acid when dissolves in water.
2. The pH of water is approximately 7, which means it is .
3. When an acid and alkali react to form water and salt is called reaction.
4. A titration experiment can be used to determine the of acid using a known concentration of base.
5. As indicator helps is to see the during a titration experiment by causing a color change.

Acids and Alkalis:
NaOH has a pH of
HCl has a pH of
Water has a pH of
List the 3 acidic compounds from the options given:

True or False
1. The phenolphthalein is not affected by the pH of the solution. T F
2. The phenolphthalein indicator changes color close to the point of T F
neutralization which shows the end-point of the titration.
3. When adding acid to base the phenolphthalein indicator changes T F
color from colorless to pink at the end of the titration.

Measuring Mass:
What tools did you measure the solid into on the balance?
What basic compound is being used for this experiment?

Standard Solution:
Record the steps you took to prepare the standard solution.

How do you know you have the correct volume when using a volumetric flask?

Alkali Concentration:
What is the molar mass of NaOH?
How do you go from grams to moles?
What was the concentration of your solution?


Preparing for titration:
Record the steps you took to prepare your standard sample for titration:



Burette setup:
Record the steps you took to prepare your burette:



Titrations:
Complete Table from Area B
Sample B Trial 1st accurate titration 2nd accurate titration
Final reading
Initial reading
Volume Added

Average Volume:

Describe what the titration looked like:


Complete Table from Area C
Sample C Trial 1st accurate titration 2nd accurate titration
Final reading
Initial reading
Volume Added

Average Volume:


Analysis:
(Show work/set-up) [you can include a screenshot here!!]
How many moles of NaOH did you use on average?

What was the concentration of your sample B?

What was the concentration of your sample C?

True or False:
The pH of the river is normally neutral. T F
The pH decreases as the concentration of the HCl increases. T F
The pH at the site of special scientific interest (site C) is good. T F
The pH of the river returns to a moderate level by the time it reaches site D. T F


Review:
Your titrations and quick response helped protect some of the wildlife at the site of special scientific interest. Three days later you sample the river at all the sites again. What do you predict your results would be?

Fill out the review page on the lab, then include a screenshot of your answers here.