Practice Laboratory Techniques In Analytical Chemistry (4.7)

Practise this section

10 questions

Flashcard drill
4 cards from this section. Quick, good the night before a test.
Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
Sign up to start the exercise
Quiz
4 questions · about 3 min · pass mark 70%. Hints available.
Sign up to start the quiz

6 sample questions

Question 1.
What is the main purpose of filtration in analytical chemistry?
Show hintHide hint
Think about how coffee is made.
Question 2.
Which technique involves heating to remove a solvent?
Show hintHide hint
Consider processes used to obtain pure substances.
3Question 3.
What technique separates solids from liquids?
- Evaporation
- Precipitation
- Filtration
Show hintHide hint
Consider coffee making to recall this process.
4Question 4.
True or False: Evaporation can leave behind soluble solids.
- True
- False
Show hintHide hint
Think about what happens to salt in seawater.
Question 5.
You are tasked with identifying the percentage of sodium chloride in a water sample. Describe how you would use evaporation and precipitation to achieve this.
Show hintHide hint
Consider how to obtain the solid first before determining its concentration.
Question 6.
Suppose you have a mixture of different salts. Explain how you would use precipitation to separate specific ions from this mixture.
Show hintHide hint
Think about solubility rules when selecting reagents.

6 more questions in this section. Enroll free to practise them all.