Neco 2021 Chemistry Question 10

Practice objective / multiple choice question 10 from the 2021 Neco Chemistry examination.

Neco 2021 Chemistry Objective / Multiple Choice Hard Difficulty

Question 10 NECO • 2021 • CHEMISTRY • objective

A copper strip of area 10 cm² is immersed in a 0.5 M NaCl solution. After 48 h the strip has lost 0.012 g of mass due to oxidation to Cu²⁺. Assuming the corrosion follows the reaction Cu → Cu²⁺ + 2 e⁻, calculate the corrosion current density i_corr in µA cm⁻². (Use Faraday constant F = 96485 C mol⁻¹.)

Correct Answer A. 21.1 µA cm⁻²

B. 10.6 µA cm⁻²

C. 211 µA cm⁻²

D. 42.2 µA cm⁻²

Correct Answer

Correct Option:

21.1 µA cm⁻²

This is Neco 2021 Chemistry Question 10. It is one of the objective questions from the 2021 Neco Chemistry examination.

Difficulty level: Hard .

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