Question

Observations seemed to be off, how would the structural formula influence my observations and what would the balanced equations be for the different solutions?

IIIB. Oxidation reaction with Fehling's solution-(Cu2 /Cu Aldehydes can be further oxidized to carboxylic acids by mild oxidizing agents such as Cu ions. Ketones do not undergo this reaction. One such mild oxidizing reagent is Fehling's solution, a solution of copper sulfate (CuSO4) mixed with an alkaline solution of sodium-potassium tartrate. In the process Cu?+ is reduced to Cu+ which precipitates as red Cu20. This type of reaction forms the basis for the testing of urine for the presence of glucose, a condition resulting from such disorders as diabetes mellitus. (Before performing this part of the experiment carefully wash the test tubes with soap solution). Test: To each of five numbered clean test tubes add 5 ml of Fehling's solution. Then add 20 drops of one of the substances or solutions indicated in the table. Thoroughly mix and heat all the tubes in a hot water bath for 10 minutes Compare and record the observed colours. Observations at intervals (in min Test Substance/ tube Solution 10 1 Propanal Propanone 3 |5% Glucose | 5% Fructose 15% Sucrose 5 Explain your observations with reference to the structural formula of the substance investigated. Write balanced equations for the reactions observed.

Answer 1

蓊1 becayge