If Fe 3 + and Cr 3 + both are present in group III of qualitative analysis, then…
Chemistry · NEET · NTA Exams — Principles Related to Practical Chemistry
If Fe3+ and Cr3+ both are present in group III of qualitative analysis, then distinction can be made by:
- addition of NH4OH in presence of NH4Cl when only Fe(OH)3 is precipitated
- addition of NH4OH in presence of NH4Cl when Cr(OH)3 and Fe(OH)3 both are precipitated and on adding Br2 water and NaOH, Cr(OH)3 dissolves
- precipitate of Cr(OH)3 and Fe(OH)3 as obtained in (b) are treated with conc. HCl when only Fe(OH)3 dissolves
- both (b) and (c)
Answer
(B) addition of NH 4 OH in presence of NH 4 Cl when Cr(OH) 3 and Fe(OH) 3 both are precipitated and on adding Br 2 water and NaOH, Cr(OH) 3 dissolves
Sign up free on Edukali to view the step-by-step worked solution and practice thousands of similar questions.
Related practice questions
- A certain light green salt gives ammonia on heating with NaOH solution. Its aqueous solution gives white…
- A salt made of bivalent ions X and Y, each of which is capable of decolourising acidified KMnO 4 solution…
- In group V, (NH 4 ) 2 CO 3 is added to precipitate out carbonates. In place of (NH 4 ) 2 CO 3 , why Na 2 CO 3…
- A gas is evolved which burns with blue flame when the mixture is heated with conc. H 2 SO 4 . The mixture…
- Which of the following reagents may be used to distinguish between phenol and benzoic acid?
- In IV group analysis NH 4 OH is added before passing H 2 S gas because:
More Principles Related to Practical Chemistry questions · Browse all practice questions