The lead-acid battery has the net reaction Pb + PbO2 + 4H+ + 2SO42–⇌ 2PbSO4 + 2H2O The concentration of sulfuric acid in the lead storage battery of an automobile over time has decreased from 38.0 percent by mass (density = 1.29 g/mL) to 26.0 percent (density = 1.19 g/mL). Assume that the volume of the acid in the battery remains constant at 724 mL. a) Calculate the total charge (in C) supplied by the battery during this change. b) How long (in hours) will it take to charge the battery back to its original sulfuric acid concentration using a current of 22.4 A?
The lead-acid battery has the net reaction Pb + PbO2 + 4H+ + 2SO42–⇌ 2PbSO4 + 2H2O The concentration of sulfuric acid in the lead storage battery of an automobile over time has decreased from 38.0 percent by mass (density = 1.29 g/mL) to 26.0 percent (density = 1.19 g/mL). Assume that the volume of the acid in the battery remains constant at 724 mL. a) Calculate the total charge (in C) supplied by the battery during this change. b) How long (in hours) will it take to charge the battery back to its original sulfuric acid concentration using a current of 22.4 A?
Chemistry for Engineering Students
4th Edition
ISBN:9781337398909
Author:Lawrence S. Brown, Tom Holme
Publisher:Lawrence S. Brown, Tom Holme
Chapter13: Electrochemistry
Section: Chapter Questions
Problem 13.101PAE
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The lead-acid battery has the net reaction Pb + PbO2 + 4H+ + 2SO42–⇌ 2PbSO4 + 2H2O The concentration of sulfuric acid in the lead storage battery of an automobile over time has decreased from 38.0 percent by mass (density = 1.29 g/mL) to 26.0 percent (density = 1.19 g/mL). Assume that the volume of the acid in the battery remains constant at 724 mL. a) Calculate the total charge (in C) supplied by the battery during this change. b) How long (in hours) will it take to charge the battery back to its original sulfuric acid concentration using a current of 22.4 A?
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