CAPE Chemistry Unit 2 · 2015 · Paper 1 · Question Q42
The appearance of a bright red precipitate on the addition of \text{Fe}(\text{NO}_3)_3 to a sample of water indicates the presence of
- (A)
\text{NO}_3^- - (B)
\text{CN}^- - (C)
\text{PO}_4^{3-} - (D)
\text{SCN}^-
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