Question

Reduction of Acetophenone. I need help with questions 3 and 4. The acetophenone mixed with acetone, does it give a color change and explain. Thanks!

Reduction of Acetophenone Effect of Chromic Acid Solution (Color Change 1. 2pts Did the reaction product give a color change? YES/NO YEs 2. 8pts Describe color change (or if no change) and provide explanation , Addthon the choma-acid trne2%a dark ed/brown oolor uith a bit of sreen the eacton tive reachan 3. 2pts Did acetophenone starting material give a color change? YES/NO No 4. 8pts Describe color change (or if no change) and provide explanation. 仕"did not proua pe she test result, turning to geen h eaon. 41

Answer 1

3) No .Cromic acid test is use for aldehyde and and alcoholes.Aldehyde and alcoholes are reduce to carboxylic acid and ketones shows colour change but ketones does not reduce Cr6+ to Cr3+ and hence no colour change observe.

4)For ketone there is no colour change in chromic acid test due to absence of carbon- hydrogen bond.Hence only aldehyde and alcoholes oxidise with Cromic acid but ketone doesn't.It dose not matter of we mix acetone with acetophenone in above reaction.Hence the answer