Chemistry, 24.07.2019 01:30, brunovillarreal6576

What is the major difference between the gc/ms spectra of vanillin and bromovanillin? g?

Answers: 1

Show answers

Answers

The Mass Spectra of these two compounds is quite easy to be differentiated. I am discussing both spectra first, and then will highlight the main differences.

Vannilin:
The main parent peak of this compound will appear at m/z = 152, and the characteristic base peak will appear at m/z = 151. And other peaks like m/z = 29 is well known for aldehydes.

Broovanillin:
The Parent peak will appear at m/z = 230 and 232 because Bromine has two stable isomers Br-79 and Br-81, and natural abundance of both isotopes is 50:50 means there will be two peaks at m/z = 230 and 232 of same relative abundance. The base peak will appear at m/z = 151. And other peaks are at m/z = 107, 109 and m/z = 123.

Difference:
First difference is in the value of parent peak, Vanillin has parent peak at 152 while Bromovanillin has at m/z = 230 and 232 with same abudance. Next main difference is the presence and absence of peaks. Like the peak of m/z = 29 is present in Vanillin but absent in Bromovanillin, second m/z = 107 and 109 is present in BromoVanillin and absent in Vanillin.

The Fragmentation scheme for both compounds is shown below,
What is the major difference between the gc/ms spectra of vanillin and bromovanillin? g?

What is the major difference between the gc/ms spectra of vanillin and bromovanillin? g?

answered: Guest

explanation:

let the different atoms be x and y. each with four protons and same mass will be represented as follows.

mass number is number of protons + number of neutrons.

$^{m}_{4}x$ and $^{m}_4y$

since, it is given that one has a negative charge while the other is neutral. therefore, there will be increase in number of protons and the atom will be represented as follows.

$^{m}_{5}x^{-}$

according to periodic table, mass number of beryllium is 9 and it has atomic number 4 so, the atoms will be $^{9}_{5}be^{-}$ and $^{9}_{4}be$ .

the protons and neutrons will be located inside the nucleus whereas the electrons will be revolving around the nucleus.

answered: Guest

C) electrons encircling a nucleus with neutrons and protons

Other questions on the subject: Chemistry

Chemistry, 22.06.2019 14:40, neonbluefaith

Which statement best describes the function of enzymes?

Answers: 1

continue

Chemistry, 22.06.2019 17:10, glitterpanda2468

Calculate the estimated density of each ball. use the formula d = m/v where d is the density, m is the mass, and v is the volume. record your calculations in table a of your student guide. given that the density of water is 1.0 g/cm3, make a prediction about whether each ball will float in water. record your prediction in table a. what is the estimated density of the table tennis ball? record your answer to the nearest hundredth

Answers: 2

continue

Chemistry, 22.06.2019 19:30, kenoknox

Astudent conducts an experiment to determine how the amount of water given to a plant affects its growth. what is the independent variable for this experiment?

Answers: 1

continue

Chemistry, 23.06.2019 05:00, kaybaby23

Scientists discovered fossils in several layers of the earth you see here. they found fossils of algae, snails, and clams in layer d. given that information, where do you think they found fossil evidence of simple land plants and amphibians?