Question

Why is detergent better than soap in cleaning action?

Answer 1

1. Soap does not work in hard water since the $C{a}^{2+}$, $M{g}^{2+}$ ions of hard water react with soap forming insoluble substance. So, it creates unnecessary wastage of soap and also harms the fiber of the clothes.

2. On the other hand, detergent works well both in hard acidic water and soft water since detergent reacts with Ca.

3. Detergent does not require vegetable oils or fats for their preparation, thus they help in saving fats and oils for human consumption.