Hard water is not fit for washing clothes because (a) it contains Na2SO4 and KCl (b) It gives precipitate (c) it contains impurities (d) it is acidic in nature

Correct answer: (b) It gives precipitate Explanation: 2RCOONa + Mg2+ → (RCOO)2Mg + 2Na+ 2RCOONa + Ca2+ → (RCOO)2Ca + 2Na2+

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Hard water is not fit for washing clothes because

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13/12/2021 4:07 pm

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Palak23

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Hard water is not fit for washing clothes because

(a) it contains Na₂SO₄ and KCl

(b) It gives precipitate

(d) it is acidic in nature

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13/12/2021 4:10 pm

Reyana09

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Correct answer: (b) It gives precipitate

Explanation:

2RCOONa + Mg²⁺ → (RCOO)₂Mg + 2Na⁺

2RCOONa + Ca²⁺ → (RCOO)₂Ca + 2Na²⁺

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