1.

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?

Answer»

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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