Question

Which of the following compounds would be consistent with a compound showing an M with an m/z ratio of 43 in a mass spectrometer? Select all that apply.

a. CH3CH2OH
b. CH3CH2NH2
c. propane
d. propene
e. None of the choices are correct.

Answer 1

The option (e) None of the choice are correct.

Step-by-step explanation:

To find
`(m)/(z)` ratio in mass spectrometer,

We start calculating from the first option

(a)

`CH_(3)- CH_(2)- OH`

We know mass of carbon
`m= 12` and atomic number of carbon
`Z = 6`

After calculating we come up with,

`(m)/(z) = 46`

Therefore option (a) is incorrect.

(b)

`CH_(3) -CH_(2)- NH_(2)`

After calculating we come up with,

`(m)/(z) = 45`

Therefore option (b) is incorrect.

(c)

`CH_(3)- CH_(2)-CH_(3)`

`(m)/(z) = 44`

Therefore option (c) is incorrect.

(d)

`CH_(3)- CH=CH_(2)`

`(m)/(z) = 42`

Therefore option (d) is incorrect.

Therefore, the option (e) is correct for this problem