Explain the procedures for testing to identify the following anions: (a) carbonate (CO₃²⁻) by reacting with dilute acid and checking for carbon dioxide gas, (b) chloride (Cl⁻), bromide (Br⁻), and iodide (I⁻) by acidifying with dilute nitric acid followed by adding aqueous silver nitrate, and (c) sulfate (SO₄²⁻) by acidifying with dilute nitric acid and then adding aqueous barium nitrate.

Quick explanation

Explain the procedures for testing to identify the following anions: (a) carbonate (CO₃²⁻) by reacting with dilute acid and checking for carbon dioxide gas, (b) chloride (Cl⁻), bromide (Br⁻), and iodide (I⁻) by acidifying with dilute nitric acid followed by adding aqueous silver nitrate, and (c) sulfate (SO₄²⁻) by acidifying with dilute nitric acid and then adding aqueous barium nitrate

• This point belongs to Identification of ions and gases, especially Identification of ions and gases outcomes.
• You need to be able to explain the procedures for testing to identify the following anions: (a) carbonate (CO₃²⁻) by reacting with dilute acid and checking for carbon dioxide gas, (b) chloride (Cl⁻), bromide (Br⁻), and iodide (I⁻) by acidifying with dilute nitric acid followed by adding aqueous silver nitrate, and (c) sulfate (SO₄²⁻) by acidifying with dilute nitric acid and then adding aqueous barium nitrate.
• The key ideas to know are Describe, Explain, and Identify.
• Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.