Studying the comparative cleaning capacity of a sample of soap in soft and hard water

Aim To study the comparative cleaning capacity of a sample of soap in soft and hard water. Apparatus and Chemicals Three test tube (20 mL) Dropper Test tube stand Three beakers (100 mL) Three glass rods A measuring cylinder (50 mL) A measuring scale Underground water Hard water Distilled water Soap solution Principle Hardness of […]