level: Testing for halide ions
Questions and Answers List
level questions: Testing for halide ions
| Question | Answer |
|---|---|
| How can we test for halide ions, Cl⁻ (aq) , Br⁻ (aq) and I⁻(aq). | If an unknown compound is dissolved in dilute nitric acide and silver nitrate solution is added, a precipitate will form if the unknown solutions contains halide ions. The precipitate will be silver chloride (AgCl), silver bromide (AgBr) or silver iodide (Agl) |
| What is the general equation for the precipitation reactions with silver nitrate solution is: | AgNo₃(aq) + X⁻ (aq) → AgX(s) + No₃⁻ (aq) Where X⁻ represents the halide ion |
| What is the colour of silver halide precipitate on addition of silver nitrate solution? Chloride (Cl⁻ (aq) ) | white |
| Whis is the colour of silver halide precipitate on addition of silver nitrate solution? Bromide (Br⁻ (aq) ) | Cream |
| What is the colour of silver halide precipitate on addition of silver nitrate solution? (Iodide) | Pale yellow |