Question

PLEASE HELP

What is the difference between a soap an detergent?

1. Soaps have long hydrocarbon chains and detergents have long nitrogen chains,

2. Detergents contain carboxylic acid groups and soaps contain phosphoric acid groups.

3. Detergents have long hydrocarbon chains and soaps have long nitrogen chains.

4. Soaps contain salts and detergents contain sulfonic or phosphoric acid groups.

Answer 1

I think the answer should be 4 because detergents contain phosphoric acid