What kind of Unknown A solution as electrolyte?

• Strong electrolyte
• Weak electrolyte
• Non electrolyte

What kind of Unknown B solution as electrolyte?

• Strong electrolyte
• Weak electrolyte
• Non electrolyte

What kind of titrant is in Back titration experiment?

• NaOH 1.0 M
• HCl 1.0 M
• Unknown A
• Unknown B

Titration graph results between Mixed solutions between A and B with NaOH 1.0 M showed that what line is in the the bottom S curve?

• S2 line

• S2

• S 2

• S 2 line

What acid is in Vitamin C tablets ?

• Ascorbic acid

• Weak acid

• C6H8O6

If you want to determine the concentration of a vitamin C solution in a back titration experiment, which concentration do you need to know first?

• Concentration of Strong Acid added

• Concentration of HCl added

• Concentration of Hydrochloric acid added

• Concentration of HCl

• Concentration of Hydrochloric acid

Direct titration is the only method to determine the concentration of acids, bases, or acidic/basic salts in drugs or medicines using titration.

In a back titration, what is added in excess is NaOH with a concentration of 1.0 M.

Which experiment has equivalent point on titration graph from experiment 1-4?

• 1 & 3

Experiment 3 must use a water bath to boil.