";s:4:"text";s:1885:" Choose the answer that best explain why benzene has a lower boiling point but much higher melting point than toluene.A. Melting points.
Benzene has both a lower boiling point and higher melting point than toluene because it is more symmetrical. The curve between the critical point and the triple point shows the benzene boiling point with changes in pressure.
Benzene melts at 5.5°C; methylbenzene at -95°C. C. The molar heat of fusion for benzene is 9.92 kJ/mol and its molar heat of vaporization is 30.8 kJ/mol. You might have expected that methylbenzene's melting point would be higher than benzene's as well, but it isn't - it is much lower! 5.5 ""^@C This is unusually high for a low molecular mass organic material.
The melting point of benzene is View information & documentation regarding Benzene, including CAS, MSDS & more. Molecules must pack efficiently in the solid if they are to … The tables and figures below show how the melting point changes with increasing carbon number up to C 33 for different kinds of hydrocarbons, alcohols and carboxylic acids.
Possibly the planarity of the ring allows for a stable crystal structure. Answer to: The enthalpy of fusion for benzene is 9.937 kJ/mol and the entropy change for fusion is 35.7 J/(mol.K). Sigma-Aldrich offers a number of Benzene products. The phase diagram for benzene shows the phase behavior with changes in temperature and pressure. More detailed definitions and examples of molecular structures of the different classes of organic compounds are given below the figures.. Melting point - the temperature at which a solid turns into a liquid Answer to The melting point of benzene is 5.5 °C and its boiling point is 80.1 °C.