JAMB - Chemistry (2003 - No. 43)
Ethanol reacts with excess acidified K\(_2\)Cr\(_2\)O\(_7\) to produce
ethanedioic acid
ethanal
ethylethanoate
ethanoic acid
Vysvětlení
When ethanol reacts with excess acidified potassium dichromate, it produces ethanoic. This reaction occurs in two steps:
- Ethanol to ethanal: Ethanol is oxidized to ethanal.
- Ethanal to ethanoic acid: Ethanal is oxidized to ethanoic acid.Potassium dichromate is a strong oxidizing agent. During the reaction, the color changes from orange to green.