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Category: Spectroscopy

Cat Links Analytical chemistry, Exam question practice, Spectroscopy

Mixed spectra long answer exam question practice

Posted on April 10, 2025April 14, 2025 Sarah Parkes

This is a set of more difficult long answer exam questions that require you to use data from mass spectra,

Continue readingMixed spectra long answer exam question practice

Cat Links Physical chemistry, Spectroscopy

How does electromagnetic radiation affect molecules?

Posted on February 28, 2025March 3, 2025 Sarah Parkes

The energy of molecules is quantised just as it is in atoms. When a molecule absorbs a photon of electromagnetic

Continue readingHow does electromagnetic radiation affect molecules?

Cat Links Analytical chemistry, Organic chemistry, Spectroscopy

Explaining C=O absorption bands in IR spectroscopy

Posted on February 8, 2023October 2, 2024 Sarah Parkes

Your may have noticed on the data sheet that the wavenumber for the absorption of C=O bonds very much depends

Continue readingExplaining C=O absorption bands in IR spectroscopy

Cat Links Analytical chemistry, Spectroscopy

Interpreting an infrared spectrum

Posted on January 12, 2023May 5, 2025 Sarah Parkes

An IR spectrum plots of the percentage of radiation that passes through a sample (transmittance) vs. the wavenumber of the

Continue readingInterpreting an infrared spectrum

Cat Links Analytical chemistry, Spectroscopy

What is infrared spectroscopy?

Posted on January 11, 2023April 14, 2025 Sarah Parkes

Infrared spectroscopy is a really useful analytical technique for determining whether there are key bonds in a molecule (C=O, O-H,

Continue readingWhat is infrared spectroscopy?

Cat Links Organic chemistry, Spectroscopy

Everything you need to know about C-13 NMR spectroscopy

Posted on December 18, 2022May 1, 2025 Sarah Parkes

13C NMR signals are considerably weaker than 1H NMR signals because the natural abundance of 13C is 1.1%. We also

Continue readingEverything you need to know about C-13 NMR spectroscopy

Cat Links Organic chemistry, Spectroscopy

Everything you need to know about proton (H-1) NMR Spectroscopy

Posted on December 10, 2022April 10, 2025 Sarah Parkes

In proton or 1H NMR spectroscopy the sample is dissolved in a solvent such as tetrachloromethane, CCl4, or trichlorodeuteriomethane, CDCl3

Continue readingEverything you need to know about proton (H-1) NMR Spectroscopy

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