Question

What is the advantage of using detergents over soap in hard water?

• A. can be used with both hard and soft water
• B. used in acidic solutions
• C. prepared from hydrocarbons of petroleum
• D. all of above

Answer 1

The correct option is D all of above

Soaps are not suitable when hard water is used. Detergents can be used with both hard and soft water. Detergents are more soluble in water than soaps. They also have a stronger cleansing action than soaps. Detergents don't need expensive vegetable oil for their preparation as they can be prepared from hydrocarbons of petroleum. They can be used in acidic solutions whereas soaps cannot be used (free fatty acids are precipitated).