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ICSE Class 9 Chemistry Question 52 of 55

ICSE Questions Set in Previous Years — Question 52

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52
Question

Question 52

Complete the following equations and state in each case if the reaction represents oxidation or reduction :

(a) Fe2+ ⟶ Fe3+

(b) Cl- ⟶ Cl

(c) Cu2+ ⟶ Cu

(d) Ag ⟶ Ag+

(e) H ⟶ H+

(f) Al ⟶ Al3+

Answer

(a) Fe2+ ⟶ Fe3+ + e-
Oxidation, loss of electrons

(b) Cl- ⟶ Cl + e-
Oxidation, loss of electrons

(c) Cu2+ + 2e- ⟶ Cu
Reduction, gain of electrons

(d) Ag ⟶ Ag+ + e-
Oxidation, loss of electrons

(e) H ⟶ H+ + e-
Oxidation, loss of electrons

(f) Al ⟶ Al3+ + 3e-
Oxidation, loss of electrons