Question

What precaution should be taken while doing the experiment of cleansing action of soap in hard and soft water?

Answer 1

In hard water their is magnesium and calcium is present and the scum remains after washing with water so we need to use a large amount of soap. this is also overcome by another class of compounds called detergents as cleansing agent. In soft water foam is formed easily.

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Answer 2

Answer:

Explanation:

In hard water their is magnesium and calcium is present and the scum remains after washing with water so we need to use a large amount of soap. this is also overcome by another class of compounds called detergents as cleansing agent. In soft water foam is formed easily.