Chemistry 5070 · O Level · Identification of ions and gases

Identification of ions and gases — practice question

Aqueous silver nitrate, $\text{AgNO}_3$, reacts with aqueous potassium chromate(VI), $\text{K}_2\text{CrO}_4$, to form a yellow precipitate. What is the ionic equation for this reaction?

  • A$2\text{AgNO}_3(aq) + \text{K}_2\text{CrO}_4(aq) \rightarrow \text{Ag}_2\text{CrO}_4(s) + 2\text{KNO}_3(aq)$
  • B$2\text{Ag}^+(aq) + 2\text{NO}_3^-(aq) + 2\text{K}^+(aq) + \text{CrO}_4^{2-}(aq) \rightarrow \text{Ag}_2\text{CrO}_4(s) + 2\text{NO}_3^-(aq) + 2\text{K}^+(aq)$
  • C$2\text{Ag}^+(aq) + \text{CrO}_4^{2-}(aq) \rightarrow \text{Ag}_2\text{CrO}_4(s)$
  • D$\text{Ag}^+(aq) + \text{CrO}_4^-(aq) \rightarrow \text{AgCrO}_4(s)$

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