C15 Analysis

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  • Created by: Lotto65
  • Created on: 10-05-16 13:08

1. What are some disadvantages of using modern instrumental methods?

  • Expensive, special training needed, results can only be interpreted by comparison of data
  • Slow, noisy and expensive
  • Expensive, takes a long time, training needed
  • Training needed, time consuming, results can only be interpreted by comparison
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Other questions in this quiz

2. What colour is the iron(II) hydroxide precipitate?

  • Green
  • Brown
  • Blue
  • Yellow

3. What does paper chromatography analyse?

  • Artificial colours in foods
  • The thermal conductivity of paper
  • The artificial colours in food or dyes in inks
  • Dyes in inks

4. Give some benefits of modern instrumental methods

  • Cheaper, more sensitive and tiny samples can be tested
  • Cheaper, tiny samples can be tested
  • Quicker, more sensitive, more accurate, tiny samples can be tested
  • More sensitive, more accurate

5. How can you record retention times?

  • Add methane to the column and see how fast they leave the column
  • An electric current detector that attaches to individual molecules
  • The individual compounds travel at different speeds through the column and it records how much left the column in how long
  • A magnetic current detector that attaches to individual molecules

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