Question

write any 1 disadvantages of hardness of water​

Answer 1

Answer:

(i) Washing: 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.

Answer 2

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Hard water is unfit for washing as it is difficult to form lather with soap.

Scum may form in a reaction with soap, wasting the soap.

Furring of tea kettles will take place due to the formation of carbonates of calcium and magnesium.

Hard blocks hot water pipes.