In Part B of Lab 11, you measured the voltage of several galvanic cells. Assembl
ID: 864811 • Letter: I
Question
In Part B of Lab 11, you measured the voltage of several galvanic cells.
Assemble a battery, represented by the diagram below with the cathode in compartment A, with Sn2+/Sn and Cu2+/Cu couples in which the voltage reads positive. (Use the Standard Reduction Potentials Table. Use the lowest possible coefficients. Omit states-of-matter from your answer.)
(a) What half-reaction occurs in compartment A?
(b) What half-reaction occurs in compartment B?
(c) Write the net redox reaction.
PLEASE SHOW YOUR WORK AND IF NECESSARY PROVIDE ANY EXPLANATION OF YOU THINK IT WOULD AIDE IN UNDERSTANDING THE QUESTION. THANK YOU
Explanation / Answer
a) oxidation reaction occur in compartment A
Sn(s) ----------------------> Sn+2 (aq) + 2e-
b) reduction reaction occur in compartment B
Cu+2(aq) + 2e- --------------------------> Cu(s)
c) net redox reaction
Sn(s) + Cu+2(aq) ----------------> Sn+2 (aq) + Cu(s)
d) cell potential
E0cell= E0cathode- E0anode
E0cell= E0Cu+2/Cu- E0Sn+2/Sn
= 0.34 - (-0.14)
= 0.48 V
(note : E0Cu+2/Cu = 0.34 V , E0Sn+2/Sn = -0.14 V at standard condition )
Related Questions
drjack9650@gmail.com
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.