Practice Oxidation States (4.5.3) - The d– and f-Block Elements

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6 sample questions

Question 1.
What is an oxidation state?
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Think of it as an indicator of electron transfer.
Question 2.
Give an example of a transition metal that shows disproportionation.
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Consider which metals have variable oxidation states.
3Question 3.
What is disproportionation?
- A reaction where one element oxidizes and reduces itself
- Only oxidation occurs
- Only reduction occurs
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Focus on the word that combines oxidation and reduction.
4Question 4.
True or False: All transition metals can exhibit disproportionation.
- True
- False
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Think about which metals are known for variable oxidation states.
Question 5.
If manganese can exist in +4, +6 and +7 oxidation states, compare the stability of these states in a strong acidic solution versus a neutral solution.
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Consider how acidic conditions affect oxidation and reduction reactions.
Question 6.
Design an experiment to observe the disproportionation of manganese in laboratory conditions and explain what to look for.
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Track the change in color from the reactant to the products.

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