Waec 2021 Chemistry Question 26

Practice objective / multiple choice question 26 from the 2021 Waec Chemistry examination. This question covers Chemistry, Electrochemistry .

Waec 2021 Chemistry Objective / Multiple Choice 3 Difficulty

Topics: Chemistry Electrochemistry

Question 26 WAEC • 2021 • CHEMISTRY • objective

Which of the following half reaction equations represent the reaction at the cathode?

Correct Answer A. \( \mathrm{A}_{(\mathrm{aq})}^{3+}+3 \mathrm{e}^{-} \rightarrow \mathrm{A}_{(s)} \)

B. \( \mathrm{B}_{(\text {aq })}^{2+}+2 \mathrm{e}^{-} \rightarrow \mathrm{B}_{(s)} \)

C. \( \mathrm{A}_{(s)} \rightarrow \mathrm{A}_{(\mathrm{aq })}^{3+}+3 \mathrm{e}^{-} \)

D. \( \mathrm{B}_{(s)} \rightarrow \mathrm{B}_{(\mathrm{aq})}^{2+}+2 \mathrm{e}^{-} \)

Correct Answer

Correct Option:

\( \mathrm{A}_{(\mathrm{aq})}^{3+}+3 \mathrm{e}^{-} \rightarrow \mathrm{A}_{(s)} \)

This is Waec 2021 Chemistry Question 26. It is one of the objective questions from the 2021 Waec Chemistry examination.

The question covers Chemistry, Electrochemistry .

Difficulty level: 3 .

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