Page 1 of 1

test 2

Posted: Sun Mar 18, 2018 2:14 am
by 904940852
what was the answer to question 7 on the test?

Re: test 2

Posted: Sun Mar 18, 2018 9:02 am
by Glendy Gonzalez 1A
The answer should be E=-0.037V

Re: test 2

Posted: Sun Mar 18, 2018 10:34 am
by 604807557
How do you calculate it?

Re: test 2

Posted: Sun Mar 18, 2018 10:36 am
by Merzia Subhan 1L
you have to use delta G naught = -nFE for each step because you can't just add up the Es. when you get the final delta G, convert it back to E.

Re: test 2

Posted: Sun Mar 18, 2018 10:39 am
by Minie 1G
you use the deltaG=-nFE equation.
Fe2+ + e- -> Fe2+ deltaG1 = -(1)(F)(0.77)
Fe2+ + 2e- => Fe(s) deltaG2 = -(2)(F)(-0.44)

Add them up, then solve for E.
deltaG1+deltaG2 = -(3)(F)(E).

Which is -0.037 V.

Re: test 2

Posted: Wed Feb 20, 2019 8:15 pm
by Megan_Ervin_1F
What sections in the seventh edition will be on the test 2