MYTUTOR SUBJECT ANSWERS

610 views

What is the basis of an NMR spectrum?

Nuclear Magnetic Resonance (NMR) is a spectroscopic technique used to detect certain nuclei in a molecule.

1H and 13C are the most commonly identified nuclei , however nuclei with an odd mass number can exhibit an nmr spectrum (ie. 14N, 17O).

NMR works by exerting a strong magnetic force on the nuclei in molecules. The spinning nuclei (ie 1H) possess a magnetic field, which when acted on by the nmr field will align either WITH or AGAINST the applied magnetic field.

The with state is lower in energy than the against state. The transititon/flip from with - against is known as resonance. Resonance is the energy difference of these two states, and is characteristic of the nuceli. Therefore, from nmr resonance values, the nuclei type and the 'environment' it's in, can be determined.

The 1H environments will be the same in a methane (CH4) molecule, but different in CH3CH2CH2Cl and therefore the protons have different resonance values - these are plotted on a spectrum, against intensity and this is the NMR spectrum.

Joanna T. Uni Admissions Test .UKCAT. tutor, Mentoring -Personal Stat...

2 years ago

Answered by Joanna, who tutored A Level Chemistry with MyTutor


Still stuck? Get one-to-one help from a personally interviewed subject specialist

115 SUBJECT SPECIALISTS

£36 /hr

Steven A.

Degree: Bioscience (Masters) - Durham University

Subjects offered:Chemistry, Science+ 5 more

Chemistry
Science
Maths
Human Biology
English
-Personal Statements-

“Hey! I'm Steven, 18 years old and I'm studying Biochemistry at Durham University. I love tutoring people, to put it simply. At my college i was a tutor to a student in the year below me for chemistry and growing up with a younger sist...”

£24 /hr

Hinsum W.

Degree: Medicine (Bachelors) - Edinburgh University

Subjects offered:Chemistry, Maths+ 3 more

Chemistry
Maths
Biology
-Personal Statements-
-Medical School Preparation-

“Hi, I'm a first year medic at Edinburgh. I've had 7 years' worth of experience teaching children Maths and English and have mentored lower school peers, so I'm bound to have an approach that will suit your learning style!”

£20 /hr

Darragh C.

Degree: Biomedical Sciences (Neuroscience) (Bachelors) - Edinburgh University

Subjects offered:Chemistry, Biology+ 1 more

Chemistry
Biology
-Personal Statements-

“About me:I study neuroscience at Edinburgh University, and have previously studied Chemistry at University College Dublin. Understanding more about the world around me has always been something I'm passionate about, and science has ...”

MyTutor guarantee

About the author

£24 /hr

Joanna T.

Degree: Chemistry (Masters) - Oxford, University College University

Subjects offered:Chemistry, Biology+ 4 more

Chemistry
Biology
.UKCAT.
.BMAT (BioMedical Admissions)
-Personal Statements-
-Medical School Preparation-

“Hi there! I`m Joanna, a Chemistry graduate from Oxford University. I am currently based in Brighton studying Medicine as a second degree”

You may also like...

Other A Level Chemistry questions

Q1. Two beakers, A and B, each contain 100.0 cm^3 of 0.0125 mol/dm^3 nitric acid. Calculate the pH of the solution formed after 50.0 cm^3 of distilled water are added to beaker A. Give your answer to 2 decimal places.

What is the difference between covalent and dative covalent bonds?

Give the half equations and then the overall balanced equation for Cu^2+/Cu (+0.54V) and Cl2/Cl^-1 (+1.36V)

Proteins are an important part of a healthy diet because they provide essential amino acids. (a) State what is meant by an essential amino acid.

View A Level Chemistry tutors

We use cookies to improve your site experience. By continuing to use this website, we'll assume that you're OK with this. Dismiss

mtw:mercury1:status:ok