The electrolysis of Na 2 SO 4 (aq) is conducted in two separate half cells joined by a salt bridge, as suggested by the cell diagram PtNa 2 SO 4 (aq)Na 2 SO 4 (aq)Pt (a) In one experiment, the solution in the anode compartment becomes more acidic, and that in the cathode compartment more basic, dur...

The electrolysis of Na 2 SO 4 (aq) is conducted in two separate half-cells joined by a

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The electrolysis of Na₂SO₄(aq) is conducted in two separate half-cells joined by a salt bridge, as suggested by the cell diagram Pt∣Na₂SO₄(aq)∥Na₂SO₄(aq)∣Pt.

(a) In one experiment, the solution in the anode compartment becomes more acidic, and that in the cathode compartment more basic, during the electrolysis. When the electrolysis is discontinued and the two solutions are mixed, the resulting solution has pH = 7. Write half-cell equations and the overall electrolysis equation.

(b) In a second experiment, a 10.00-mL sample of an unknown concentration of H₂SO₄(aq) and a few drops of phenolphthalein indicator are added to the Na₂SO₄(aq) in the cathode compartment. Electrolysis is carried out with a current of 21.5 mA (milliamperes) for 683 s, at which point, the solution in the cathode compartment acquires a lasting pink color. What is the molarity of the unknown H₂SO₄(aq)?

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Related Book For answer-question

General Chemistry Principles And Modern Applications

ISBN: 9780132931281

11th Edition

Authors: Ralph Petrucci, Jeffry Madura, F. Herring, Carey Bissonnette

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Question Posted: Nov 27, 2023 05:24 AM

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The electrolysis of Na 2 SO 4 (aq) is conducted in two separate half-cells joined by a

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a Halfcell equations and overall electrolysis equation During electrolysis the anode is the site of ...View the full answer

General Chemistry Principles And Modern Applications

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