10th class science cleaning capacity of soap in hard and soft water

cleaning capacity of soap in hard and soft water, 10th class science practical. #Science#cbse #ncert Cleaning capacity of soap: Water is used for washing along with the soap. The effectiveness and cleansing action of soap depends on the type of water. Soft water: The type of water which produces lather with the soap is called soft water. Washing of clothes is very effective and easy in soft water. Hard water: The type of water which does not produce lather with the soap is called hard water. It contains dissolved salts in it. The soap forms scum with hard water and not fit for laundry purpose. Soaps are effective cleaner only in soft water because the soap molecules separate in soft water. But in case of hard water, the soap molecules do not remain as soap molecules but the ionic end of soap reacts with the salts present in hard water to form curdy white precipitate called scum.