convert---------1.acetaldehyde to acetone2.acetone to acetaldehyde3.acetaldehyde to lactic acid4.acetaldehyde to crotonaldehyde5.acetic acid to formic acid6.formic acid to acetic acid7.acetic acid to acetone8.acetone to acetic acid9.acetic acid to methane10.methane to acetic acid11.acetic acid to propionic acid12.methyl chloride to acetic acid

Dear Vikash,

The simplest way would be to make the sodium salt by reacting it with NaOH. Then evaporate it to near dryness and continue heating it with a bunsen burner or similar heat source. The decarboxylation will produce methane. This is hazardous because the methane will catch fire with the flame or any spark so a gas collection apparatus of some sort must be used.

Another method would be to run the electrolysis of the sodium acetate reaction. Methane would be produced at the anode but would be contaminated with CO2 and some ethane. This method is known as the Kolbe electrolysis and is pretty slow.

Best Of luck

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acetic acid to propionic acid conversion

react acetic acid with hydrogen iodide in the presence of phosphorus as a catalyst which will form ethene.bromination of ethene will form ethyl bromide.convert this ethyl bromide to ethyl magnesium bromide which on reaction with carbon dioxide will form propionic acid