Describe7 marksChallenge
Table 1 shows some physical properties of water and of ethanol.
Table 1
| Property | Water | Ethanol |
|---|---|---|
| Specific heat capacity / J g⁻¹ °C⁻¹ | 4.18 | 2.44 |
| Enthalpy of vaporisation / J g⁻¹ | 2260 | 846 |
| Boiling point / °C | 100 | 78 |
Describe how hydrogen bonding occurs between water molecules. Use the data in Table 1 and your knowledge of hydrogen bonding to explain the differences in specific heat capacity and latent heat of vaporisation between water and ethanol. Relate these properties to the roles of water in living organisms.