✔ 最佳答案
1. sulphuric acid (British) / sulfuric acid (U.S.)
*2. protonated propanone
*3. hydrogen chloride
4. hydronium ion
5. ethanoic acid
6. pentane-2,4-dione (British) / 2,4-pentanedione (U.S.)
7. phenol
8. water
9. ethanol
10. 1,1-dimethylethanol
11. propanone
12. ethyne
13. ammonia
14. ethene
15. ethane
(The picture for *2 and *3 are NOT clearly seen.)