10D.1

Question 1

what is the molecular ion peak

Answer 1

it is a peak that represents a species formed from a molecule when it loses an electrons

Question 2

in an organic compound, the molecular peak is the peak

Answer 2

furthest to the right with the highest m/z ratio

Question 3

what is the M + 1 peak

Answer 3

it is a small peak that forms beside the molecular ion peak, it represents an a naturally occurring isotope of carbon 13

Question 4

what is the carbon 14 isotope

Answer 4

it is a naturally occurring isotope that is very radioactive and is used in carbon dating, the proportion of this isotope in an organic compound is so small that in can be ignored from the mass spectrometry

Question 5

what are the peaks that form on a mass spectrometer

Answer 5

1. molecular ion peaks
2. peaks due to fragmentation
3. peek due to rearrangement
4. peak due to loss of more than one electron
5. and the M + 1 peak

Question 6

what is fragmentation

Answer 6

it is something that occurs when molecular ions break into smaller pieces and it’s a good way to work out a stricter of an organic product

Question 7

the breaking of a c-c bond in a molecular ion of a hydrocarbon would form

Answer 7

1. a positive ion

2. a free radical

Question 8

all peaks in the mass spectrometer are

Answer 8

caused by positive ions (RADICALS ARE BAD) Jk there cool

Question 9

what can you get in an exam

Answer 9

a complete mass spectrometer = ur screwed dude haha! they show you all the large peaks and some of them cant are used to work on the structure

a simplified mass spectrometer = ur okay that gives you only the peaks that will help you find the structure

a list of m/z value of these useful peaks you are dead ass golden mf

Question 10

what is the base peak

Answer 10

it is the tallest peak and the peak with the greatest abundance (usually at 100%) and it represents the most stable fragment