In which change would it be necessary to overcome only van der Waals’ forces?
- Aevaporation of ethanol: $\text{C}_2\text{H}_5\text{OH}(l) \rightarrow \text{C}_2\text{H}_5\text{OH}(g)$
- Bmelting of ice: $\text{H}_2\text{O}(s) \rightarrow \text{H}_2\text{O}(l)$
- Cmelting of solid carbon dioxide: $\text{CO}_2(s) \rightarrow \text{CO}_2(l)$
- Dsolidification of butane: $\text{C}_4\text{H}_{10}(l) \rightarrow \text{C}_4\text{H}_{10}(s)$