Answer to Question #270326 in General Chemistry for Alisha

Question

Answer the following questions using the figures shown below. 

a. Using IUPAC nomenclature system name alcohols A,B and C

b. Write the chemical equation for the oxidation of alcohols A, B and C, using K2Cr2O7 as the oxidizing agent.

Answer 1

a)Alcohols with one to four carbon atoms are frequently called by common names, in which the name of the alkyl group is followed by the word alcohol:

According to the International Union of Pure and Applied Chemistry (IUPAC), alcohols are named by changing the ending of the parent alkane name.

b)The oxidizing agent used in these reactions is normally a solution of sodium or potassium dichromate(VI) acidified with dilute sulfuric acid. If oxidation occurs, then the orange solution containing the dichromate(VI) ions is reduced to a green solution containing chromium(III) ions. The electron-half-equation for this reaction is as follows:

Cr2O2−7+14H++6e−→2Cr3++7H2O(1)

Primary alcohols