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in Reactivity Series and Electrochemistry by (37.7k points)
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Analyse the reactions and answer the following questions:

a. Which among the following test tubes will undergo a chemical reaction? 

b. What are these chemical reactions called? 

c. Explain the oxidation and reduction reactions taking place here including the chemical equation?

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a. Chemical reaction takes place in test tube (ii) only. 

b. These chemical reactions are called displacement reactions.

c. Chemical equation: (including oxidation states) 

Mg° (s) + Fe2+ S6+ O42- (aq) → Mg2+S6+O2-4 (aq) + Fe° (s) 

At Mg : Mg°(s) → Mg2+ (aq) + 2e- (oxidation) 

At Fe2+ , Fe2+ (aq) + 2e- →  Fe°(s) (reductipn)

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