5 Marks Questions

Question 15 Marks

What do you meant by electrochemical cells? By giving the example of Daniel cell, explain its construction and working with diagram.

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Question 25 Marks

Explain briefly about the electrochemical series and give its main uses.

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Question 35 Marks

Balance the following reactions by oxidation number method :
(a) $Cl _2 O _7+ H _2 O \longrightarrow ClO _2^{-}+ O _2$ (Basic medium)
(b) $MnO _4^{-}+ H _2 S \longrightarrow Mn ^{2+}+ S + H _2 O$ (Acidic medium)

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Question 45 Marks

Balance the following reactions by ion electron method :
(a) $MnO _4^{-}+ H ^{+}+ Fe ^{2+} \longrightarrow Mn ^{2+}+ Fe ^{3+}+ H _2 O$
(b) $Cr _2 O _7^{2-}+ H ^{+}+ I ^{-} \longrightarrow Cr ^{3+}+ I _2+ H _2 O$

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Question 55 Marks

How can we calculate the equivalent weight of oxidants and reductants?

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Question 65 Marks

Explain different definitions of oxidation and reduction processess with example.

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