When water was added to a white anhydrous substance X, the colour changed to blue....
CHEMISTRY
WAEC 2017
When water was added to a white anhydrous substance X, the colour changed to blue. X is
- A. CuSO4
- B. FeSO4
- C. Na2SO4
- D. PbSO4
Correct Answer: A. CuSO4
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