Organic Analysis Flashcards

1
Q

What does an O–H bond in alcohols look like?

A
  • Smooth curve in high range (3230-3550)
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2
Q

What does an O–H bond in an acid look like?

A
  • Wider + sometimes bumpier, overlaps with C–H bond (2500-3000)
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3
Q

When answering an IR question, what do you have to include? (2)

A
  • Absorption range peak
  • Type of bond
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4
Q

What is the fingerprint region?

A

Region below 1500cm-1 ethic is unique to a particular compound

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5
Q

How can IR spectrometry be used to confirm that compound is definitely ethyl butanoate?

A

Compare with known spectrum from a database, it should be an exact match

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6
Q

Why can’t a mass spectrometer which measures m/z ratios to 1 decimal place tell the difference between C10H16O4 and C11H4O4?

A

They have the same molecular mass to 1 decimal place

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7
Q

Why can’t high resolution mass spectrometer tell the difference between propan-1-ol and propan-2-ol?

A

They have the exact same molecular formula, so their molecular mass will be exactly identical

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8
Q

Why does C have a relative molecular mass of 12.00000?

A

12C is a standard reference

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9
Q
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10
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11
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12
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13
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