Substance Melting Point (ºC)
castor oil –9.8
phenol 43.2
benzene. 5.7
formic acid 8
Which substance has the weakest bonds between its molecules?
a. formic acid
b. phenol
c. castor oil
d. benzene
Its C, just took test
To determine which substance has the weakest bonds between its molecules, we need to consider the melting points of the substances. Substances with weaker intermolecular forces tend to have lower melting points because less energy is required to break the bonds between their molecules.
Looking at the given melting points:
- castor oil: -9.8 ºC
- phenol: 43.2 ºC
- benzene: 5.7 ºC
- formic acid: 8 ºC
The substance with the lowest melting point is castor oil, which means it has the weakest bonds between its molecules. Therefore, the answer is c. castor oil.