Testing for cation (7) in unknown solution using sodium hydroxide

Опубликовано: 26 Июль 2026
на канале: Bernice Chen Yaqi

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In this video, I will demonstrate how to carry out the test for an unknown cation using sodium hydroxide

Observation: Blue precipitate forms, insoluble in excess sodium hydroxide
Conclusion: Copper(II) ion is present in the unknown solution

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