CAPE Chemistry Unit 2 · 2012 · Paper 1 · Question Q38
The presence of phosphate ions (\text{PO}_4^{3-}) can be detected using
- (A)ammonium molybdate
- (B)potassium hexacyanoferrate(II) solution
- (C)potassium thiocyanate solution
- (D)sodium thiosulphate
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