4.3.10 - Formation of Coloured Ions
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Practice Questions
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What is a coloured ion?
💡 Hint: Think about the light absorption and the colour perceived.
What role do ligands play in forming coloured complexes?
💡 Hint: Consider how different ligands might change an ion's appearance.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What causes a transition metal ion to be coloured?
💡 Hint: Think about what changes in the ion structure lead to colour.
True or False: The observed colour of an ion is the same as the colour it absorbs.
💡 Hint: Recall the complementary colour theory.
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Challenge Problems
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Given a transition metal compound that appears green, identify potential ligands that could cause this coloration and justify your reasoning.
💡 Hint: Consider what ligands typically impart colour to compounds and their charge.
Describe a laboratory procedure to determine the concentration of an unknown cobalt(II) ion solution using its colour.
💡 Hint: Remember how colour intensity relates to concentration in dilutions.
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