Qualitative Analysis - Result Question 43

####46. From the solution containing copper (+2) and zinc (+2) ions, copper can be selectively precipitated using sodium sulphide.

(1987, 1M)

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Answer:

Correct Answer: 46. CrO2Cl2

Solution:

  1. ZnS is soluble in dil. HCl but CuS does not dissolve in dil. HCl.


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