Multiple Choice
Given the table below predict the numerical value of the standard cell potential for the reaction:
2 Cr(s) + 3 Cu2+(aq) → 2 Cr3+(aq) + 3 Cu(s)
Half Reaction E° (volts)
(1) Cr3+(aq) + 3 e- → Cr(s) -0.74
(2) Cr3+(aq) + e- → Cr2+(aq) -0.41
(3) Cr2O72-(aq) + 14 H+(aq) + 6 e- → 2 Cr3+(aq) + 7 H2O(l) 1.33
(4) Cu+(aq) + e- → Cu(s) 0.52
(5) Cu2+(aq) + 2 e- → Cu(s) 0.34
(6) Cu2+(aq) + e- → Cu+(aq) 0.16
A) 2.50 volts
B) 0.417 volts
C) -1.08 volts
D) 1.08 volts
E) -0.40 volts
Correct Answer:
Verified
Correct Answer:
Verified
Q111: Choose the INCORRECT statement.<br>A)When a half reaction
Q112: Determine E°<sub>ce</sub><sub>ll</sub> for the reaction: Pb(s)+ Cu<sup>2+</sup>(aq)→
Q113: How many grams of chromium metal are
Q114: For the reaction: Mg(s)+ AgNO<sub>3</sub>(aq)→ Ag(s)+ Mg(NO<sub>3</sub>)<sub>2</sub>(aq)<br>Ag<sup>+</sup>(aq)+
Q115: Given the following half-reactions occurring in the
Q117: One mole of electrons has a charge
Q118: A constant current of 15.0 A is
Q119: The standard emf for the cell using
Q120: A galvanic cell consists of one half-cell
Q121: A solution of AuCl<sub>3</sub>(aq)is electrolyzed by passing