Question 1

What is Ecell at 25°C of the spontaneous cell made from the Zn2+/Zn (0.76 V)  and Br2(l) /Br- (1.07 V)  half cells if [Zn2+] = 10-2 and [Br-] = 10-4?

Accepted Answer

A)   0.40 V
B)   0.13 V
C)   0.61 V
D)   0.01 V
E)   0.49 VF) D) and E)
G) C) and D)

Question 2

Write the net redox reaction that occurs in the following galvanic cell. Ti(s)  ∣ Ti3+(aq)  || Se2-(aq)  ∣ Se(s)

Accepted Answer

A)   Ti(s)  + Se2-(aq)  + 1 e- → Ti3+(aq)  + Se(s) 
B)   2 Ti(s)  + 3 Se(s)  → 2 Ti3+(aq)  + 3 Se2-(aq) 
C)   Ti(s)  + Se(s)  → Ti3+(aq)  + Se2-(aq)  + 1 e-
D)   2 Ti3+(aq)  + 3 Se(s)  → 2 Ti(s)  + 3 Se2-(aq) 
E)   2 Ti3+(aq)  + 3 Se(s)  + 1 e- → 2 Ti(s)  + 3 Se2-(aq) F) D) and E)
G) A) and D)

Question 3

Choose the correct statement based on the following oxidation potentials. Mg/Mg2+ +2.37 v Fe/Fe2+ +0.44 v Cu/Cu2+ -0.34 v
Zn/Zn2+ +0.76 v Sn/Sn2+ +0.14 v Ag/Ag+ -0.80 v

Accepted Answer

A)   Mg will not displace Zn2+ from solution
B)   Cu will displace Sn2+ from solution
C)   Fe will displace Zn2+ from solution
D)   Fe will displace H+ from solutionE) B) and D)
F) B) and C)

Exam 20: Electrochemistry

What is Ecell at 25°C of the spontaneous cell made from the Zn²⁺/Zn (0.76 V) and Br₂(l) /Br- (1.07 V) half cells if [Zn²⁺] = 10^-² and [Br-] = 10^-4?

Correct Answer
verified

Write the net redox reaction that occurs in the following galvanic cell. Ti(s) ∣ Ti³⁺(aq) || Se^2-(aq) ∣ Se(s)

Correct Answer
verified

Choose the correct statement based on the following oxidation potentials. Mg/Mg²⁺ +2.37 v Fe/Fe²⁺ +0.44 v Cu/Cu²⁺ -0.34 v Zn/Zn²⁺ +0.76 v Sn/Sn²⁺ +0.14 v Ag/Ag⁺ -0.80 v

Correct Answer
verified

Exam 20: Electrochemistry

What is Ecell at 25°C of the spontaneous cell made from the Zn2+/Zn (0.76 V) and Br2(l) /Br- (1.07 V) half cells if [Zn2+] = 10-2 and [Br-] = 10-4?

Correct AnswerverifiedShow Answer

Write the net redox reaction that occurs in the following galvanic cell. Ti(s) ∣ Ti3+(aq) || Se2-(aq) ∣ Se(s)

Correct AnswerverifiedShow Answer

Choose the correct statement based on the following oxidation potentials. Mg/Mg2+ +2.37 v Fe/Fe2+ +0.44 v Cu/Cu2+ -0.34 v Zn/Zn2+ +0.76 v Sn/Sn2+ +0.14 v Ag/Ag+ -0.80 v

Correct AnswerverifiedShow Answer

What is Ecell at 25°C of the spontaneous cell made from the Zn²⁺/Zn (0.76 V) and Br₂(l) /Br- (1.07 V) half cells if [Zn²⁺] = 10^-² and [Br-] = 10^-4?

Correct Answer
verified

Write the net redox reaction that occurs in the following galvanic cell. Ti(s) ∣ Ti³⁺(aq) || Se^2-(aq) ∣ Se(s)

Correct Answer
verified

Choose the correct statement based on the following oxidation potentials. Mg/Mg²⁺ +2.37 v Fe/Fe²⁺ +0.44 v Cu/Cu²⁺ -0.34 v Zn/Zn²⁺ +0.76 v Sn/Sn²⁺ +0.14 v Ag/Ag⁺ -0.80 v

Correct Answer
verified