Respuesta :
The answer would be RCH2COCH2R is more polar than RCH2(OH)R
The formic acid ( RCH2COCH2R ) is more polar than Pyridinium Chlorochromate (PCC) (RCH2(OH)R) because formic acid is from aldehyde group and is a reagent from a carbonyl group and PCC is react to form carbonyl group it's also an reagent which reacts in oxidation of alcohols.
The polarity is more which is a carbonyl compound as their electrons are loosely prepared. And also the polarity of formic acid is 6.0.
Hence, the formic acid (RCH2COCH2R) is more polar than Pyridinium Chlorochromate (RCH2(OH)R) (PCC).
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