Titration

What does the titration lab teach you?

(CHOOSE ALL THAT APPLY)

• The importance of accuracy

• The importance of precision

• How to change chemicals from one color to another

• Important lab skills

What specifically are you learning to calculate in this lab?

• Grams required to achieve your desired molarity

• How to use mass and volume data to determine the molarity of a solution

• How to change chemicals' colors

• Density

Acidic and basic solutions are generally:

• Clear and colorless

• Cloudy and opaque

• Sweet and sour

• Hot and cold

What is the equivalence point for an acid-base neutralization?

• The amount of base added to equal to the amount of acid initially present

• The amount of acid added to equal to the amount of base initially present

• The amount of acid added to equal to the amount of water initially present

• The amount of base added to equal to the amount of water initially present

When does phenolphthalein change color?

• pH = 8.0+

• Temperature = 100°C

• Pressure = 1 atm

• Concentration of HCl = 0.1 M

What is the formula to calculate molarity?

• M = liters of solution/moles of solute

• M = moles of solute/grams of solution

• M = liters of solution/grams of solute

• M = moles of solute/liters of solution

Is moles a measurable quantity?

• Maybe

• no

• yes

Why should you always refill the buret before each trial?

• To ensure accurate measurements

• To prevent contamination of the titrant

• To make sure there is enough titrant available to complete each trial

• To reduce the amount of time needed for the experiment

How do you determine the volume of liquid delivered from a buret?

• Measure the diameter of the buret.

• Subtract the final volume from the initial volume.

• Calculate the mass of the liquid.

• Calculate the density of the liquid.

What are burets used for?

• To deliver a recorded amount of liquid or solution to another container

• To measure the temperature of a liquid

• To measure the volume of a solid

• To measure the mass of a liquid