Cambridge IGCSE Chemistry practice
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At a glance
3
Paper
3
Marks
Topic
Identification of ions and gases
Exam-style question
Testing for cations using sodium hydroxide.
Description
Describe the test for identifying iron(III) ions (Fe³⁺) using sodium hydroxide.
Describe the test for iron(III) ions using sodium hydroxide.
Aim for approximately 3 distinct marking points.
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Question 1 of 5
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Description
You are provided with solutions containing various cations. You need to identify them using sodium hydroxide and ammonia.
State the observation when NaOH is added to a solution containing copper(II) ions (Cu²⁺).
Aim for approximately 1 distinct marking point.