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SingaporeChemistryQuick questions
Analytical Techniques
Quick questions on Chemical tests for ions and gases (qualitative analysis): Singapore A-Level H2 Chemistry
5short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.
What is cation tests with sodium hydroxide?Show answer
Add sodium hydroxide dropwise then in excess; note the precipitate colour and whether it dissolves in excess:
What is cation tests with aqueous ammonia?Show answer
Add aqueous ammonia dropwise then in excess:
What is q1?Show answer
Describe the test and observation to distinguish from . [2 marks]
What is q2?Show answer
State the reagent and observation for the test for sulfate ions. [2 marks]
What is q3?Show answer
Describe how you would test a gas to confirm it is ammonia. [1 mark]
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