Why does ferrocene have a higher melting point than acetylferrocene?

Ferrocene is symmetrical while acetyl ferrocene is not symmetrical.

Explanation:

Acetyl ferrocene is attached to an acetyl group, the upper part of the ring is asymmetrical. On the other hand, ferrocene, whose rings are symmetrical (no groups attached to any of the rings) has a higher melting point due to symmetry.

This means that symmetry in a molecule implies a higher higher melting point.

As a general rule, symmetrical molecules in crystalline form usually have higher melting temperatures and exhibit lower solubilities when they are compared with molecules of similar structure but with lower symmetry.

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.