jee_main_2026_24_january_morning - Electrochemistry Topics

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QUESTION #71 Faraday's Laws of Electrolysis
Electricity is passed through an acidic solution of Cu^2+ till all the Cu^2+ was exhausted, leading to the deposition of 300 text mg of Cu metal. However, a current of 600 text mA was continued to pass through the same solution for another 28 text minutes by keeping the total volume of the solution fixed at 200 text mL. The total volume of oxygen evolved at STP during the entire process is ____ textmL. (Nearest integer) [Given : Cu^2+(aq)+2e^- rightarrow Cu(s) quad E_red^0 = +0.34 text V O_2(g)+4H^++4e^- rightarrow 2H_2O quad E_red^0 = +1.23 text V Molar mass of Cu = 63.54 text g mol^-1 Molar mass of O_2 = 32 text g mol^-1 Faraday Constant = 96500 text C mol^-1 Molar volume at STP = 22.4 text L ]
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JEE Physics: Waves (+15.5%) | Electrostatics: Concentric Shells (-29.7%) | Modern Physics: Photoelectric Clones (+34.2%) | Mathematics: Definite Integrals (+18.1%) | Chemistry: Coordination Splitting (-11.4%) | JEE Physics: Waves (+15.5%) | Electrostatics: Concentric Shells (-29.7%) | Modern Physics: Photoelectric Clones (+34.2%) | Mathematics: Definite Integrals (+18.1%) | Chemistry: Coordination Splitting (-11.4%)
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