Igcse Model Questions Vol1 2023 Chemistry Question 33
Practice objective / multiple choice question 33 from the 2023 Igcse Model Questions Vol1 Chemistry examination.
An electrolytic cell contains a CuSO_{4} solution of unknown Cu^{2+} concentration at 298 K. A constant current of 0.50 A is passed for 30.0 min, depositing copper on the cathode. The measured cell voltage during the process is 0.30 V. The standard reduction potential for Cu^{2+} + 2 e^{-} \rightarrow Cu(s) is E^{\circ}=+0.34 V. (i) Using the Nernst equation, calculate the initial Cu^{2+} concentration (in mol L^{-1}, to two significant figures). (ii) Assuming the solution volume is 1.00 L, determine the mass of copper deposited (in grams, to two significant figures). (iii) Calculate the Cu^{2+} concentration after deposition (in mol L^{-1}, to two significant figures).
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About This Question
This is Igcse Model Questions Vol1 2023 Chemistry Question 33. It is one of the objective questions from the 2023 Igcse Model Questions Vol1 Chemistry examination.
Difficulty level: Medium .
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