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How is IR spectroscopy used?

Answer 1

Cautiously and selectively.

See here for an old answer. And also here.

The use of #IR# spectroscopy presupposes the presence of strong IR absorbing functionality within the molecule; this usually means the presence of #C-=O# and #N-=O^+# groups.

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Answer 2

Easton Jones

IR spectroscopy is used to identify and analyze the functional groups present in a molecule by measuring the absorption of infrared radiation. It provides information about the types of bonds present and can help determine the structure and composition of organic and inorganic compounds.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.