Electricity is passed through an acidic solution of Cu ²⁺ till all the Cu ²⁺ was exhausted, leading to the deposition of 300 mg of Cu metal. However, a current of 600 mA was continued to pass through the same solution for another 28 minutes

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Electricity is passed through an acidic solution of Cu ²⁺ till all the Cu ²⁺ was exhausted, leading to the deposition of 300 mg of Cu metal. However, a current of 600 mA was continued to pass through the same solution for another 28 minutes by keeping the total volume of the solution fixed at 200 mL. The total volume of oxygen evolved at STP during the entire process is _ _ _ _ mL. (Nearest integer) [Given: Cu ²⁺( aq

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Eq of Cu = Eq of O₂ 300 10⁻³ 2 63.54 = n_ O₂ 4 2.36 10⁻³ = n_ O₂ When current is further passed n_ O₂ 4 = 600 28 60 96500 1000 n_ O₂ = 2.611 10⁻³ Total O₂ released = [10⁻³ (2.36 + 2.611)] 22400 ml = 111.35 ml

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