×
Log in to StudySoup
Get Full Access to Chemistry: A Molecular Approach - 3 Edition - Chapter 18 - Problem 18.39
Join StudySoup for FREE
Get Full Access to Chemistry: A Molecular Approach - 3 Edition - Chapter 18 - Problem 18.39

Already have an account? Login here
×
Reset your password

Solved: The hydrogen-oxygen fuel cell is described in

Chemistry: A Molecular Approach | 3rd Edition | ISBN: 9780321809247 | Authors: Nivaldo J. Tro ISBN: 9780321809247 1

Solution for problem 18.39 Chapter 18

Chemistry: A Molecular Approach | 3rd Edition

  • Textbook Solutions
  • 2901 Step-by-step solutions solved by professors and subject experts
  • Get 24/7 help from StudySoup virtual teaching assistants
Chemistry: A Molecular Approach | 3rd Edition | ISBN: 9780321809247 | Authors: Nivaldo J. Tro

Chemistry: A Molecular Approach | 3rd Edition

4 5 1 406 Reviews
10
3
Problem 18.39

The hydrogen-oxygen fuel cell is described in Section 18.6. (a) What volume of H2(g), stored at 25C at a pressure of 155 atm, would be needed to run an electric motor drawing a current of 8.5 A for 3.0 h? (b) What volume (liters) of air at 25C and 1.00 atm will have to pass into the cell per minute to run the motor? Assume that air is 20 percent O2 by volume and that all the O2 is consumed in the cell. The other components of air do not affect the fuel-cell reactions. Assume ideal gas behavior.

Step-by-Step Solution:

Problem 18.39The hydrogen-oxygen fuel cell is described in Section 18.6. (a) What volume of (g),stored at 25C at a pressure of 155 atm, would be needed to run an electric motor drawing acurrent of 8.5 A for 3.0 h (b) What volume (liters) of air at 25C and 1.00 atm will have topass into the cell per minute to run the motor Assume that air is 20 percent byvolume and that all the is consumed in the cell. The other components of air do notaffect the fuel-cell reactions. Assume ideal gas behavior. Step by step solutionStep 1 of 2(a)The half - cell reactions for the electrolysis of hydrogen - oxygen cell are as follows.____________________________________________________________From the given ,Current = 8.5 ATime = 3600 sLet’s calculate the charge of the electrolytic cell.Hence, the charge of electrolytic cell is\nLet’s calculate the produced moles of hydrogen at anode.Hence, 0.476 moles of hydrogen produced at an anode.Let’s calculate the volume of hydrogen gas.Volume of hydrogen gas can be calculated by the Ideal gas equation. ..............................(1)Rearrange the formula is as follows. ..............................(2) V = Volume of the gas n = Number of moles of the gas R = Gas constant T = Temperature of the gas P = Pressure of the gasFrom the given,Pressure (P) = 155 atmNumber of moles (n) = 0.476 molGas constant (R) = 0.0821 L .atm /mol.KTemperature (T) = 25 + 273 = 298 KSubstitute the given values in the equation (2)Therefore, the volume of hydrogen gas is 75.0 ml.\n____________________________________________________________________________

Step 2 of 2

Chapter 18, Problem 18.39 is Solved
Textbook: Chemistry: A Molecular Approach
Edition: 3
Author: Nivaldo J. Tro
ISBN: 9780321809247

This full solution covers the following key subjects: Cell, air, Volume, run, atm. This expansive textbook survival guide covers 82 chapters, and 9454 solutions. Chemistry: A Molecular Approach was written by and is associated to the ISBN: 9780321809247. The answer to “The hydrogen-oxygen fuel cell is described in Section 18.6. (a) What volume of H2(g), stored at 25C at a pressure of 155 atm, would be needed to run an electric motor drawing a current of 8.5 A for 3.0 h? (b) What volume (liters) of air at 25C and 1.00 atm will have to pass into the cell per minute to run the motor? Assume that air is 20 percent O2 by volume and that all the O2 is consumed in the cell. The other components of air do not affect the fuel-cell reactions. Assume ideal gas behavior.” is broken down into a number of easy to follow steps, and 98 words. The full step-by-step solution to problem: 18.39 from chapter: 18 was answered by , our top Chemistry solution expert on 02/22/17, 04:35PM. This textbook survival guide was created for the textbook: Chemistry: A Molecular Approach, edition: 3. Since the solution to 18.39 from 18 chapter was answered, more than 320 students have viewed the full step-by-step answer.

Other solutions

People also purchased

Related chapters

Unlock Textbook Solution

Enter your email below to unlock your verified solution to:

Solved: The hydrogen-oxygen fuel cell is described in