Washing soda soften both temporal and permanent hardness by :

Dissolving salts

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Forming precipitate

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Forming soluble salts

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None of the above

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Solution

The correct option is B Forming precipitate
Permanent hard water can be made soft by adding sodium carbonate (also called washing soda) to it. This will soften both temporal and permanent hardness. In this chemical reaction, the calcium and magnesium ions react with sodium to form a precipitate.

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Similar questions

Assertion (A): Permanent hardness of water is removed by treatment with washing soda.
Reason(R): Washing soda reacts with soluble magnesium and calcium sulphate to form water-soluble compounds.

Q. Assertion :Permanent hardness of water can be removed by using washing soda Reason: Washing soda reacts with soluble calcium and magnesium chlorides and sulphates in hard water to form insoluble carbonates

Q. Assertion (A): Permanent hardness of water is removed by treatment with washing soda.
Reason(R): Washing soda reacts with soluble magnesium and calcium sulphate to form insoluble compounds.

Both temporary and permanent hardness in water can be removed by the addition of washing soda. Which of the following reactions represents the removal of permanent hardness in water?

Q. Boiling hard water with washing soda removes permanent hardness.

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Washing soda soften both temporal and permanent hardness by :

The correct option is B Forming precipitatePermanent hard water can be made soft by adding sodium carbonate (also called washing soda) to it. This will soften both temporal and permanent hardness. In this chemical reaction, the calcium and magnesium ions react with sodium to form a precipitate.

The correct option is B Forming precipitate
Permanent hard water can be made soft by adding sodium carbonate (also called washing soda) to it. This will soften both temporal and permanent hardness. In this chemical reaction, the calcium and magnesium ions react with sodium to form a precipitate.