A strong, sharp absorption at about 1720 cm⁻¹ indicates
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An absorption at about 2250 cm⁻¹ suggests
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An alcohol's IR spectrum shows a broad absorption at
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Ethanol is oxidised; the product's IR spectrum shows a peak at 1730 cm⁻¹ but no broad O–H band. The product is
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The molecular ion peak gives
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A peak at = 29 in a mass spectrum could be
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The M⁺ peak has height 50.0 and the M+1 peak height 3.30. How many carbon atoms are in the molecule?
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Two molecular ion peaks at 122 and 124 in a 1 : 1 ratio suggest the molecule contains
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The fingerprint region is used to
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A carboxylic acid's O–H absorption is
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Propanone ( 58) has a major peak at 43. This fragment is
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In a mass spectrometer, only fragments that are __ are detected.
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