Question

Stqte the disadvantages of using hard water.​

Answer 1

Answer:

soft water.

The disadvantages of hard water

Since hard water does not lather easily with soap, it wastes a great deal of soap when it is used in washing. It therefore is not economical to be used in washing.

It is not advisable to use hard water in washing white fabrics since it tends to stain white fabrics by making them appear grey. More often than not when you use hard water to wash your white clothes, you are going to see the clothes turning grey after you have washed them. This is what hard water often does to white fabrics.

Hard water is not good for dyeing materials. This is why the dyeing industry doesn’t use it to work.

Hard water forms annoying limescales in containers such as kettles, pots, pipes, etc.

Answer 2

Explanation:

Hard water, when used for washing purposes, does not lather freely with soap. On the other hand, it produces sticky precipitates of calcium and magnesium soaps. The formation of such insoluble, sticky precipitated continues, till all calcium and magnesium salts present in water are precipitated. After that, the soap (e.g., sodium stearate) gives lather with water.

This causes wastage of soap being used. Moreover, the sticky precipitate (of calcium and magnesium soaps) adheres on the fabric/cloth giving spots and streaks. Also presence of iron salts may cause staining of cloth.