Acetylene appear as gas and is unstable and thus kept in presence of other solution such as liquid ammonia.
Ethanol on reacting with ammonia produces ethylamine as follows:
![CH_3CH_2OH + NH_3 -> CH_3CH_2NH_2 + H_2O](https://img.qammunity.org/2019/formulas/chemistry/college/o1m57k6zkqneln8zv5f21o91sti1mupi62.png)
Ethanol again on reacting with ethylamine produces diethylamine and triethylamine as follows:
![CH_3CH_2OH + CH_3CH_2NH_2 -> (CH_3CH_2)_2NH + H_2O](https://img.qammunity.org/2019/formulas/chemistry/college/iyio73m2bjxxoptr2twphof30bj4lhp29z.png)
![CH_3CH_2OH + (CH_3CH_2)_2NH -> (CH_3CH_2)_3N + H_2O](https://img.qammunity.org/2019/formulas/chemistry/college/psuzlp0tlcce85vhghrvemjnbzw14iq5sm.png)