Acid and Base - chem
Principles of Chemistry
(University of Ottawa)
, ASSIGNMENT
Tutorials
Setting up and Performing a Titration https://www.youtube.com/watch?v=sFpFCPTDv2w
Titration Calculations https://www.youtube.com/watch?v=2z4mlE6MK0U
VIRTUAL LAB
Go to the virtual lab https://virtual.edu.rsc.org/titration/experiment/2/5 Notes
from the given video:
• 100,000 L HCL some might have spilled in a nearby river upstream
• When HCl mixes with water, the compound completely dissociates and becomes hydrogen ions and
chlorine ions
• Acids can be neutralized by bases
• Bases soluble in water are called alkalis
• When sodium hydroxide dissolves in water, the ions dissociate (Na and OH are suspended in the solution)
• Acid + Alkali --- salt and water
• HCl +NaOH - NaCl + H2O
• H+ O - H2O
• Indicators are used when the titration is complete
• Amount NaOH (mol) = concentration of NaOH (mol dm -3) x volume of NaOH (cm3) / 1000
Pre-Lab: Watch the given video that provides background knowledge about the case study and introduces titration
experiments. HCl was spilled in a river and must be neutralized with a base to restore the natural pH of the water.
Chemists must test the water and conduct experiments to know how greatly the river was affected. Also, when HCl and
water interact, the hydrogen and chlorine ions completely dissociate which causes a major problem when trying to
restore the pH of the river since the river now has a high concentration of HCl ions (making it very acidic).
Step #1 Comprehension check
What is the purpose of this step?
Purpose is to check the chemist’s comprehension of fundamental ideas about titration.
How is it done?
This was done by matching the correct terms with their definition.
The image(s) of the procedure in this step.
Principles of Chemistry
(University of Ottawa)
, ASSIGNMENT
Tutorials
Setting up and Performing a Titration https://www.youtube.com/watch?v=sFpFCPTDv2w
Titration Calculations https://www.youtube.com/watch?v=2z4mlE6MK0U
VIRTUAL LAB
Go to the virtual lab https://virtual.edu.rsc.org/titration/experiment/2/5 Notes
from the given video:
• 100,000 L HCL some might have spilled in a nearby river upstream
• When HCl mixes with water, the compound completely dissociates and becomes hydrogen ions and
chlorine ions
• Acids can be neutralized by bases
• Bases soluble in water are called alkalis
• When sodium hydroxide dissolves in water, the ions dissociate (Na and OH are suspended in the solution)
• Acid + Alkali --- salt and water
• HCl +NaOH - NaCl + H2O
• H+ O - H2O
• Indicators are used when the titration is complete
• Amount NaOH (mol) = concentration of NaOH (mol dm -3) x volume of NaOH (cm3) / 1000
Pre-Lab: Watch the given video that provides background knowledge about the case study and introduces titration
experiments. HCl was spilled in a river and must be neutralized with a base to restore the natural pH of the water.
Chemists must test the water and conduct experiments to know how greatly the river was affected. Also, when HCl and
water interact, the hydrogen and chlorine ions completely dissociate which causes a major problem when trying to
restore the pH of the river since the river now has a high concentration of HCl ions (making it very acidic).
Step #1 Comprehension check
What is the purpose of this step?
Purpose is to check the chemist’s comprehension of fundamental ideas about titration.
How is it done?
This was done by matching the correct terms with their definition.
The image(s) of the procedure in this step.
