- Aniline and phenol form strong hydrogen bonds leading to negative deviation from Raoult's law.
- Other solvents do not form such strong interactions.
Find the variance of the following frequency distribution:
| Class Interval | ||||
| 0--4 | 4--8 | 8--12 | 12--16 | |
| Frequency | 1 | 2 | 2 | 1 |