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Iron II Chloride

Among PbS, Cu...

Question

Among $P b S, C u S, H g S, M n S, A g_{2} S, N i S, C o S, B i_{2} S_{3}$ and $S n S_{2}$ , the total number of black coloured sulphides is

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Solution

Black sulphides are $P b S, C u S, H g S, N i S, C o S, B i_{2} S_{3}$ and $A g_{2} S$ . $M n S$ is buff and $S n S_{2}$ is yellow.

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P b S, C u S, H g S, M n S, A g_{2} S, N i S, C o S, B i_{2} S_{3}

_{2}

, the total number of black coloured sulphides are:

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respectively. The solubility of these sulphides will be in the order:

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P b C l_{2}, H g_{2} C l_{2}, A l (O H)_{3}, Z n S, H g S, S n S_{2}, C d S, S r C O_{3}, B a C O_{3}

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c) Ag - Mn d) Zn - Cu

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10^{- 31}, 10^{- 42}

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respectively. The correct order of their solubility in water is

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Iron II Chloride

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