## Question

###### 1. Why is the Fehling reaction positive for aliphatic aldehydes,negative for aromatic aldehydes, and even less for ketones?Fundamentally based on theory.2. What is the theoretical basis (chemical equation) forobtaining the derivative 2,4-dinitrophenylhydrazone for aldehydesand ketones? What is the importance of obtaining this type ofderivative in the identification of a certain carbonylcompound?

1. Why is the Fehling reaction positive for aliphatic aldehydes, negative for aromatic aldehydes, and even less for ketones? Fundamentally based on theory. 2. What is the theoretical basis (chemical equation) for obtaining the derivative 2,4-dinitrophenylhydrazone for aldehydes and ketones? What is the importance of obtaining this type of derivative in the identification of a certain carbonyl compound?

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