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Exam questionKROK 1Pharmacy ยท 2010

A solution under examination was added to the solution of FeSO4 in presence of concentrated H2SO4. Formation of a brown ring indicates presence of:

Answer options

  1. Nitrate ions
  2. Carbonate ions
  3. Phosphate ions
  4. Oxalate ions
  5. Acetate ions
Correct answer

Nitrate ions

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