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6 December, 18:54

Which compound is soluble in water? (1) PbS (3) Na2S (2) BaS (4) Fe2S3

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  1. 6 December, 21:52
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    Correct Answer: Na2S

    Reason:

    The compound sodium sulfide i. e. Na2S is soluble in water. This compound gives strong alkaline aqueous solutions. On the other hand, the remaining three compounds i. e PbS, BaS and Fe2S3 are non-soluble in water. Often these compounds are also referred as sparingly soluble compounds.
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