Question detail
What is the observation when aqueous copper(II) ions react with sodium hydroxide (A-level cue 46a60c69 focus)
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
Question
Type
exam_style
Style
Topic
Reactions of ions in aqueous solution (A-level only)
Question
What is the observation when aqueous copper(II) ions react with sodium hydroxide (A-level cue 46a60c69 focus)
Answer
A blue precipitate of copper(II) hydroxide is formed. This answer is anchored to Aqueous ion tests (A-level only). This version is uniquely anchored to Aqueous ion tests (A-level only). Retrieval anchor: A-level cue 46a60c69.
Explanation
A blue precipitate of copper(II) hydroxide is formed. This answer is anchored to Aqueous ion tests (A-level only). is correct because it supports the objective: Describe reactions of aqueous metal ions with sodium hydroxide.. The reasoning stays within Aqueous ion tests (A-level only) and avoids drifting into a similar A-Level Chemistry idea. This version is uniquely anchored to Aqueous ion tests (A-level only). Retrieval anchor: A-level cue 46a60c69.
Common mistake
Misidentifying Precipitate Colors
Students often incorrectly describe the color of the precipitate formed when aqueous metal ions react with sodium hydroxide, confusing different metal ions.
To accurately describe the color of the precipitate, remember the specific reactions: for example, when copper(II) ions react with sodium hydroxide, the formula is Cu²⁺ + 2OH⁻ → Cu(OH)₂ (s), which forms a blue precipitate. Always refer to the specific metal ion and its corresponding hydroxide color.
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