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Which statement about chloride ions is not correct? A - AQA - A-Level Chemistry - Question 8 - 2021 - Paper 3
Question 8
Which statement about chloride ions is not correct? A. They form a white precipitate with silver nitrate solution that is soluble in dilute aqueous ammonia. B. The... show full transcript
Worked Solution & Example Answer:Which statement about chloride ions is not correct? A - AQA - A-Level Chemistry - Question 8 - 2021 - Paper 3
Step 1
B. They form an octahedral cobalt(III) complex when aqueous cobalt(III) ions are reacted with an excess of chloride ions.
Answer
The statement indicates that chloride ions can form an octahedral complex with cobalt(III) ions. This statement is, in fact, correct. When excess chloride ions are present, cobalt(III) ions can indeed coordinate to form complexes, thus this is not the correct statement among the options provided.