- What safety precautions are to be followed?
- Lab coats/aprons.
- Safety glasses/goggles.
- Wash spills with water.
- All of the above.
- What solution(s) will the concentration be known at the start?
- Acetic acid (vinegar).
- Sodium hydroxide solution.
- Both acetic acid (vinegar) and sodium hydroxide solution.
- Neither acetic acid (vinegar) or sodium hydroxide solution.
- How many trials (titrations) should be done?
- 1
- 2
- 3
- 4
- What will be the used as the sample?
- Acetic acid (vinegar).
- Sodium hydroxide solution.
- Phenolphthalein solution.
- None of the above.
- How will the sample volumes be measured?
- Weighing mass.
- Volumetric pipette.
- Burette.
- Graduated flask.
- What will be the used as the titrant?
- Acetic acid (vinegar).
- Sodium hydroxide solution.
- Phenolphthalein solution.
- Neither.
- What will aid in pouring the titrant into the burette?
- Dropper.
- Beaker.
- Flask.
- Funnel.
- How many drops of indicator should be placed in each sample?
- 1 or 2
- 2 or 3
- 3 or 4
- 4 or 5
- What should be observed as the endpoint of the titration?
- The pH is 7.
- The indicator turns colorless.
- The indicator turns faint pink.
- The indicator turns dark pink.
- What will the samples be placed in for titration?
- Beakers.
- Pipettes.
- Erlenmeyer flasks.
- Burettes.
- What should be under the sample container while titrating the sample?
- The indicator.
- A ring stand base.
- White paper.
- The bench top.
- What is recorded by observing (reading - not calculating) the graduations on the burette for each trial (select 2!)?
- Which image is the best situation at the start of titrating a sample using a 50mL burette?
-
- What reading should be recorded from the meniscus level below?
- 49mL
- 49.8mL
- 49.78mL
- 49.787mL
- What determines the volume of titrant to be used in the end of lab calculation?
- Average of the 4 trials.
- Average of the closest 3 trials.
- Average of trials that are +-0.1mL of each other.
- The two faintest pink result trials.
