The reaction represented by the equation: Ni²+}(_{aq}) + Fe(_s) → Ni(_s) + Fe²+}(_{aq}) is a redox reaction because

Correct Answer is : Ni2+²+}2+ ions are reduced and Fe acts as a reducing agent.

Ni²+} ions are oxidized and Fe acts as a oxidizing agent

Ni²+} ions are oxidized and Fe acts as a reducing agent

Ni²+} ions are reduced and Fe acts as an oxidizing agent

Ni²+} ions are reduced and Fe acts as a reducing agent.

Correct Answer is : Ni2+²+}2+ ions are reduced and Fe acts as a reducing agent.

Test Index

WAEC Chemistry 2024 Paper

Question : 15

Total: 50

^{2+}

(_{aq}

(_s

(_s

^{2+}

(_{aq}

) is a redox reaction because

Solution:

Ni $^{2+}$ $_{aq}$ + Fe $_s$ → Ni $_s$ + Fe $^{2+}$ $_{aq}$

Reduction takes place from Ni $^{2+}$ to Ni because there is a decrease in oxidation number from +2 to 0. Thus, Ni $^{2+}$ ions are reduced to Ni

Oxidation takes place from Fe to Fe $^{2+}$ because there is an increase in oxidation number from 0 to +2. Thus, Fe is oxidized to Fe $^{2+}$

Oxidizing agent → Ni $^{2+}$ because oxidizing agents undergo reduction.

Reducing agent → Fe because reducing agents undergo oxidation.

Consequently, option D is the correct option.

Go to Question:

Prev Question

Next Question