Reaction #3: Identification of an Unknown Solid Acid

Question 1

Part 1: Titration

Answer 1

Weigh solid oxalic acid dihydrate
Rinse volumetric flask with DIx3
Add water to beaker and stir until dissolved
Pour solution into flask, rinse beaker with DI x3
Add water to flask until calibration, add last bit with dropper
Mix by completely flipping
Titrate oxalic acid with NaOH

Question 2

Part B: Titration

Answer 2

Weigh out unknown solid acid
Weigh out three samples by difference
Heat if needed
Titrate

Question 3

Primary Standard

Answer 3

Has a known concentration

Question 4

Secondary Standard

Answer 4

Calibrated against a solution with a known concentration

Question 5

Mono/di/tri protic acids

Answer 5

How many protons are available to dissociate

Question 6

Bronsted and Lowry Acids

Answer 6

Acid donates protons, base receives protons

Question 7

If you use either a strong base or acid…

Answer 7

The reaction will go to completion

Question 8

Equivalence point

Answer 8

When in stoichiometric proportion

Question 9

End point

Answer 9

When colour changes permanently

Question 10

Standardization

Answer 10

Determine concentration of unknown by titrating it against a known concentration