Consider the expected splitting of the C2 proton signal in the 1H NMR spectrum of 2-ethyl-1,3-propanediol. Presuming that the coupling constants for neighboring protons are sufficiently different, and that the instrument has sufficient resolving power, what is the theoretical multiplicity of the C2 proton signal? a. 12
b. 15
c. 0
d. 6

Seven

Explanation:

In this case, in the middle carbon; (carbon 2) we have 3 neighbors. In the left and right carbon, we have 4 hydrogens in total. In the top carbon, we have 2 hydrogens also, so, in total, we have 6 hydrogens. If we follow the n+1 rule, we will have:

n= 6

signals= n + 1 = 6 + 1 = 7

So, we will have a signal of 7 (a septet).

See figure 1

I hope it helps!

the ideal gas law equation is as follows

pv = nrt

where p - pressure

v - volume

n - number of moles

r - universal gas constant

t - temperature

so if the pressure, volume and temperature are already known

we are left with n and r

since r is the universal gas constant that has a known fixed value then r too is known

so we are left with 'n'

once we know temperature volume and pressure

we can find the number of moles of gas present using the ideal gas law equation

this is not my own answer, this is an answer for the same question by the user blahblahmali. i do not claim ownership of this account.