Grades for Andrea Brisby: Fi S. University of Oklahoma + O saplingleaming.com/ib
ID: 590085 • Letter: G
Question
Grades for Andrea Brisby: Fi S. University of Oklahoma + O saplingleaming.com/ibiscms/mod/ibi5Nie w.php?id-3871 620 Sapling Learning Jump to. Andrea Brisby macmillan learring Question 3 of 28 Available From: 11/17/2017 06:00 PM Due Date: Points Possible: 5 Grade Category: Homework 21100 Sapling Learning 12/1/2017 11:55 PM A current of 3.23 A is passed through a Fe(NOsh solution. How long (in hours) would this current have to be applied to plate out 7.50 g of iron? Number 5 attempt, 0% penalty, Policies: Solutions After Due Date You can check your answers You can view solutions after the due date. You have five attempts per question There is no penalty for incorrect answers. eTextbook 72 100 10 4 100 11 0 12 130 14 100 15 0 Help With This Topi Web Help& Videos O Technical Support and Bug Reports Previous e Check Answer Next Ext Hint © 2011-2017 Sapling Learning, Inc. about u | careers | privacy policy | tams of use | contact us | help 7:08 PM Type here to searchExplanation / Answer
the electrolysis expression is:
Fe2+ + 2e- ------> Fe
1 mol of Fe requires 2 mol of electron
1 mol of electron = 96485 C
So,1 mol of Fe requires 192970 C
let us calculate mol of element deposited:
we have below equation to be used:
number of mol, n = mass/molar mass
= 7.5/55.85
= 0.13429 mol
total charge = mol of element deposited * charge required for 1 mol
= 0.13429*192970
= 25913.6079 C
we have below equation to be used:
time = Q/i
= 25913.6079/3.23
= 8022.7888 seconds
= 8022.7888/3600 hr
= 2.23 hr
Answer: 2.23 h
Feel free to comment below if you have any doubts or if this answer do not work. I will edit it if you let me know
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.