Chemistry Lab: Esters

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Chemistry Lab Esters

• Eastside Union High School

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Title Synthesis of methyl salycilate

• PURPOSESynthesize the wintergreen ester methyl
  salicylate.

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Performing Tests

• Spot plates will be used.
• A reference, control, tap water and pool water
  samples will be tested for the presence each ion.
• There should be 4 data tables, one for each ion
  being tested for.
• Note these results are qualitative because no
  numbers are involved in the observations.
• Basically you will see the positive result or
  you wont. There will be variations in intensity
  however.

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Cleaning Spot Plates

• Take a piece of filter pap.

-gt
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Cleaning Spot Plates

• Use squirt bottle and .

-gt
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Using filter paper and funnel

• Fold in half once more.

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Using filter paper and funnel

• Peel back ONE of the folds.

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Using filter paper and funnel

• Place filter paper in funnel.
• Use water bottle to wet the paper to keep it in
  place.
• Squeeze any air bubbles out that will prevent
  flow.

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Performing the Tyndall Test

• Place beaker in the very back of the Tyndall Box.

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Performing the Tyndall Test

• Place finger on laser button, but do not press.

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Performing the Tyndall Test

• Look at beaker, now press button for ONE second.
• Colloid Solution

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Mixtures LabQuestions(write down the questions)

• 1 - Before filtering, which mixtures were
  solution, suspension or colloid?
• 2 - After filtering, which mixtures were
  solution, suspension or colloid?
• 3 - What is the Tyndall test? Which two types of
  mixtures is it useful to distinguish between?
• 4 - Which liquid mixture can you identify at a
  distance?
• 5 - Does filtering with the filter paper change a
  colloid to a solution?