Learning objective
Recall that limewater turns milky if carbon dioxide is produced.
Read the explanation, check the common trap, then practise with flashcards and questions.
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Topic
Identification of ions by chemical and spectroscopic means
Subtopic
Carbonate ions
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Understand this objective
Quick explanation
Recall that limewater turns milky if carbon dioxide is produced
- This point belongs to Identification of ions by chemical and spectroscopic means, especially Carbonate ions.
- You need to be able to recall that limewater turns milky if carbon dioxide is produced.
- The key ideas to know are milky, limewater, and carbon dioxide.
- Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.
Key concepts
Why it matters
This objective helps connect Carbonate ions to exam-style questions, flashcards, and revision notes for Identification of ions by chemical and spectroscopic means.
Quick student answer
What should you know about limewater turns milky if carbon dioxide is produced?
Direct answer
In Chemistry, this page helps you answer questions about limewater turns milky if carbon dioxide is produced within Identification of ions by chemical and spectroscopic means. Focus on the key process, correct scientific terms, and how the idea links to exam-style questions. Key terms to check are limewater and carbon dioxide.
Key terms
- limewater: A clear solution of calcium hydroxide used to test for carbon dioxide; it turns milky in the presence of carbon dioxide.
- carbon dioxide: A colorless gas produced when carbonate ions react with dilute acid; it can be confirmed by its effect on limewater.
Common trap
Confusing Limewater Reaction: Emphasize that carbon dioxide must be produced by reacting carbonate ions with dilute acid before it can turn limewater milky.
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Revision notestopic notes
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Open revision notesRelated learning objectives
- Describe how flame tests can be used to identify some metal ions.
Flame tests
- Recall that lithium ions produce a crimson flame.
Flame tests
- Recall that sodium ions produce a yellow flame.
Flame tests
- Recall that potassium ions produce a lilac flame.
Flame tests
- Recall that calcium ions produce an orange-red flame.
Flame tests