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The concentration of sulphide ion in 0.1...

The concentration of sulphide ion in `0.1M HCl` solution saturated with hydrogen sulphide is `1.0xx10^(-19)M`. If `10mL` of this is added to `5mL` of `0.04M` solution of the following : `FeSO_(4)` , `MnCl_(2)`, `ZnCl_(2)` and `CdCl_(2)`.in which of these solutions precipitation will take place ?

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  19. What is the minimum volume of water required to dissove 1g of calcium ...

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