Question

Draw the structure of SDS (sodium dodecyl sulfate). On the drawing of SDS, circle the chemical...

Draw the structure of SDS (sodium dodecyl sulfate). On the drawing of SDS, circle the chemical group that is electrically charged? What is the sign of that electric charge? Also circle the hydrophobic group on the same SDS drawing.

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Answer #1

Sodium dodecyl sulfate is also known as sodium lauryl sulphate and widely used as a detergent.

It is a synthetic organic compound.

It has a molecular formula : CH3(CH2)11SO4Na.

It conatins both hydrophilic and hydrophobic parts in it.

The hydrophilic part dissolves in water (it consists of ionic end)

The hydrophobic part dissolves in oil or grease.

The molecule is as shown below:

The electrically charged group is : CH3(CH2)11SO4-

The sign of the charged species is negative.

The hydrophobic group is the alkyl group.

It is as shown below:

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