Question

In the soap micelles, [NCERT Exemplar] (a) the ionic end of soap is on the surface of the cluster while the carbon chain is in the interior of the cluster (b) ionic end of soap is in the interior of the cluster and the carbon chain is out of the cluster (c) Both ionic end and carbon chain are in the interior of the cluster (d) Both ionic end and carbon chain are on the exterior of the cluster

Answer 1

Answer:a) ionic end of soap is on the surfaceof the cluster while carbon chain is in the interior of the cluster

See the diagram below

NCERT textbook science pg no. 75

Answer 2

In the soap micelles (a) the ionic end of soap is on the surface of the cluster while the carbon chain is in the interior of the cluster.

Explanation:

• Soap is formed in a process called saponification. It takes place between vegetable oil and potassium hydroxide.
• The characteristics of soap include hardness, cleansing, lather, conditioner and fragrance.
• The molecule in soap has two ends which are Hydrophilic end and Hydrophobic end.
• The Hydrophilic end loves water whereas Hydrophobic end repulses water.
• When soap is mixed with water, it forms micelles. It is spherical in shape.
• In micelles, the hydrophilic end (ionic end) point outside where as hydrophobic end (carbon chain) points inside. Dirt is trapped with the hydrophobic end inside micelles.