Question

would you be able to check if water is hard by using detergent​

Answer 1

Answer:

No. we would not be able to check if water is hard by using a detergent.It is because detergents are long ammonium or sulphonate salts of long chain carboxylic acids. The ionic ends of thes compounds do not form insoluble precipitates with the calcium and magnesium ions present in hard water.

Answer 2

Answer:

Detergents are ammonium or sulphonate salts of long chain carboxylic acids. Unlike soap, they do not react with calcium and magnesium ions present in hard water to form scum. ... This means that detergents can be used in both soft and hard water. Therefore, it cannot be used to check whether the water is hard or not.