Mrs. Lewis gives you a piece of iron and asks you to determine the physical and chemical properties of the metal. She wants you
to classify the properties as either physical or chemical:
A. Identify the properties as physical or chemical properties.
B. Explain why you categorized each property as either a physical or chemical property.
A. Identify the properties as physical or chemical properties.
B. Explain why you categorized each property as either a physical or chemical property.
1 answer:
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Answer:
In the 1H NMR spectrum of ethanol three different signals are observed, this is due to the existence of 3 types of hydrogens with different chemical environment. Hydrogens A (3.57 ppm) are more screened than C (1.10 ppm) due to the presence of oxygen (electonegative atom that removes electron density). The chemical environment of hydrogen B (4.78 ppm), attached directly to oxygen, is also different by resonating at a frequency different from the previous ones.
The hydroxylic hydrogen produces a singlet, the pair of carbon hydrogens one give rise to a quadruplet and the three hydrogens of carbon two produce a triplet.
Explanation: