P3 organic practise

Name compound E

Give a chemical test and result to show the presence of the -OH group in compound E

Give a chemical test and its result that could be used to show the presence of the iodine atom in F.

A few drops of G are shaken with 2 cm3

of a dilute aqueous solution of

potassium manganate(VII) acidified with dilute sulfuric acid.

State the colour change that occurs in this reaction.

From ​ ​ (a)   to​ (b)  

• purple
• colourless
• red
• yellow
• green
• orange
• blue
• black
• white

A few drops of G are shaken with 2 cm3 of a dilute aqueous solution of potassium manganate(VII) acidified with dilute sulfuric acid.

Draw the skeletal formula of the organic product of this reaction.

State the reagent and give the essential conditions for the conversion of F to G.

State the reagent and give the essential conditions for the conversion of F to G.

A student attempted to convert G to F using a standard method involving the addition

of hydrogen iodide, HI, prepared in situ. However, very little of F was formed.

Draw the structure of the major product obtained by the student.

A student attempted to convert G to F using a standard method involving the addition of hydrogen iodide, HI, prepared in situ. However, very little of F was formed.

Explain, by referring to the intermediate in the mechanism of the reaction,

why F is only a minor product.

Compound E may be oxidized with potassium dichromate(VI) acidified with

sulfuric acid, using the apparatus shown below. For clarity, clamps, stands and

rubber tubing have been omitted from the diagram. Label "W1" and "W2"

a

b

Water out

Water in