Question

Write a word and chemical equation for the chemical change taking place in magnesium salts during the softening of hard water

Answer 1

Answer:

the water is treated with a combination of slaked lime, Ca(OH)2,soda ash,Na2CO3. Calcium precipitate as CaCO3, magnesium precipitate as Mg(OH)2. these solids can be collected,thus removing the scale-forming cations from the water supply...

Explanation.,

During softening of hard water the magnesium iron react with slaked lime and sodium carbonate and gets precipitated. the reaction is ..

Mg + OH → Mg(OH)2

water is of two types

→ hard water

→ soft water

Hard water.

it is that which contains calcium and magnesium salts.

Soft water .

it is that which does not contains ions.

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