Chemistry: The Central Science (13th Edition)

Published by Prentice Hall
ISBN 10: 0321910419
ISBN 13: 978-0-32191-041-7

Chapter 13 - Properties of Solutions - Exercises: 13.42a

Answer

0.0234

Work Step by Step

To find the mole fraction, we first need to find the number of moles of each component. We have 20.8g of phenol and 425g of ethanol. Phenol C6H5OH - Carbon is 12g/mol, H is 1g/mol, O is 16g/mol MW = 12*6 + 5*1 + 16 + 1 = 94g/mol Ethanol CH3CH2OH - MW = 12 + 3*1 + 12 + 2*1 + 16 + 1 = 46 g/mol Then we have 20.8g * (1mol/94g) = 0.221 mole phenol 425g * (1mol/46g) = 9.24 mole ethanol In total we have 0.221 + 9.24 = 9.46 moles total Therefore, the mole fraction of phenol is 0.221/9.46 = 0.0234
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.