$\text{H}_2\text{NNHC}_6\text{H}_3(\text{NO}_2)_2$ gives the structural formula of 2,4-DNPH. A large number of organic reactions, though not all, have to be heated before they take place. Which reaction proceeds at a satisfactory rate at room temperature ($20\,^{\circ}\text{C}$)?
- A$\text{C}_{10}\text{H}_{22} \rightarrow \text{C}_8\text{H}_{18} + \text{C}_2\text{H}_4$
- B$\text{CH}_3\text{CH}_2\text{CH}_2\text{Br} + \text{NH}_3 \rightarrow \text{CH}_3\text{CH}_2\text{CH}_2\text{NH}_2 + \text{HBr}$
- C$\text{CH}_3\text{CH}_2\text{OH} + \text{KBr} \rightarrow \text{CH}_3\text{CH}_2\text{Br} + \text{KOH}$
- D$(\text{CH}_3)_2\text{CO} + \text{H}_2\text{NNHC}_6\text{H}_3(\text{NO}_2)_2 \rightarrow (\text{CH}_3)_2\text{C}=\text{NNHC}_6\text{H}_3(\text{NO}_2)_2 + \text{H}_2\text{O}$