+1-415-670-9189
info@expertsmind.com
Explain the protons that give rise to the signal
Course:- Chemistry
Reference No.:- EM13148992




Assignment Help
Assignment Help >> Chemistry

A proton NMR spectrum (recorded using a spectrometer operating at 700 MHz) exhibits two signals, one at 7 ppm and one at 9ppm. Which of the following statements are correct? Select all that apply. A) The protons that give rise to the signal at 7 ppm are more shielded than the protons that give rise to the signal at 9 ppm. B) The protons that give rise to the signal at 7 ppm are less shielded than the protons that give rise to the signal at 9 ppm. C) The signal at 7 ppm is downfield from the signal at 9 ppm. D) The signal at 7 ppm is upfield from the signal 9 ppm. E) The resonance frequency of the protons that give rise to the signal at 7 ppm is larger than the resonance frequency of the protons that give rise to the signal at 9 ppm.




Put your comment
 
Minimize


Ask Question & Get Answers from Experts
Browse some more (Chemistry) Materials
Benomyl, chlorothalonil, ethylene oxide, fuberidazole, and ziram. find the 2 weak base and estimate what pH the water would need to be to drop their vapor pressure to 50% that
The substance X is an element which has the elemental form of X(s) at 25oC. The standard enthalpy of formation of HXO4(g) is -818.0 kJ/mol at 25oC. The standard entropy of H
(1) How are the aldehyde functional group and the carboxylic acid functional group similar? How are they different? (2) How are ketone, ether, and ester functional groups simi
Explain the volume of carbon monoxide gas (CO) collected over water at 25 C was 680 c3 with a total pressure of 752mmHg. The vapor pressure of water at 25 C is 23.8 mmHg. Fi
The standard enthalpy of combustion of solid urea (CO (NH2)2) is -632 kl mol-1 at 298 K and its standard molar entropy is 104.60 J K-1 mol-1, Calculate the standard Gibbs en
The Franck-Hertz experiment demonstrated which of the following?  Atoms colliding with electrons absorb energy in discrete amounts. Atomic spectra ar
Which state in each of the following pairs has the higher entropy per mole of substance. 1. Ice at - 40 degrees C or ice at 0 degrees C 2. N2 at STP or N2 at 0 degrees C and
Utilize Acid-catalyzed ester hydrolysis instead of Hydroxide-ion-promoted ester hydrolysis. Is the merely difference that acid-catazlyed is a reversable reaction and hydrox