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emmeaw245
emmeaw245
16.04.2020 • 
Chemistry

1. Which is the reduction 1/2 reaction?

I2 / Zn^+2

A. Zn <--> Zn^+2 + 2e-
B. 2I^-1 <--> I2(s) + 2e-
C. I2(s) + 2e- <--> 2I^-1
D. Zn^+2 + 2e- <--> Zn
E. I2(s) + Zn <--> 2I^-1 + Zn^+2
F. Ag2S + 2e- <--> 2Ag + S^-2

2.

Which is the oxidation 1/2 reaction?

I2 / Zn^+2

A. Zn <--> Zn^+2 + 2e-
B. 2I^-1 <--> I2(s) + 2e-
C. I2(s) + 2e- <--> 2I^-1
D. Zn^+2 + 2e- <--> Zn
E. I2(s) + Zn <--> 2I^-1 + Zn^+2
F. Ag2S + 2e- <--> 2Ag + S^-2

3.

What is the balanced, net ionic equation?

I2 / Zn^+2

A. Zn <--> Zn^+2 + 2e-
B. 2I^-1 <--> I2(s) + 2e-
C. I2(s) + 2e- <--> 2I^-1
D. Zn^+2 + 2e- <--> Zn
E. I2(s) + Zn <--> 2I^-1 + Zn^+2
F. Ag2S + 2e- <--> 2Ag + S^-2

4.

What is the E(V) value?

I2 / Zn^+2

A. Zn <--> Zn^+2 + 2e-
B. 2I^-1 <--> I2(s) + 2e-
C. I2(s) + 2e- <--> 2I^-1
D. Zn^+2 + 2e- <--> Zn
E. I2(s) + Zn <--> 2I^-1 + Zn^+2
F. Ag2S + 2e- <--> 2Ag + S^-2

5.

Which is the reduction 1/2 reaction?

Sn^+4 / Cr^+2

A. Sn^+2 <--> Sn^+4 + 2e-
B. Sn^+4 + 2e- <--> Sn^+2
C. Cr^+2 + 2e- <--> Cr
D. Cr <--> Cr^+2 + 2e-
E. Sn^+4 + Cr <--> Sn^+2 +Cr^+2
F. Sn^+2 +Cr^+2 <--> Sn^+2 +Cr

6.

Which is the oxidation 1/2 reaction?

Sn^+4 / Cr^+2

A. Sn^+2 <--> Sn^+4 + 2e-
B. Sn^+4 + 2e- <--> Sn^+2
C. Cr^+2 + 2e- <--> Cr
D. Cr <--> Cr^+2 + 2e-
E. Sn^+4 + Cr <--> Sn^+2 +Cr^+2
F. Sn^+2 +Cr^+2 <--> Sn^+2 +Cr

7.

What is the balanced, net ionic equation?

Sn^+4 / Cr^+2

A. Sn^+2 <--> Sn^+4 + 2e-
B. Sn^+4 + 2e- <--> Sn^+2
C. Cr^+2 + 2e- <--> Cr
D. Cr <--> Cr^+2 + 2e-
E. Sn^+4 + Cr <--> Sn^+2 +Cr^+2
F. Sn^+2 +Cr^+2 <--> Sn^+2 +Cr

8.

What is the E(V) value?

Sn^+4 / Cr^+2

A. -0.76 V
B. +0.76 V
C. +1.06 V
D. -1.06 V

9.

Which is the reduction 1/2 reation?

Br2(I) / AgBr(s)

A. Br2 + 2e- <--> 2 Br^-1
B. 2 Br^-1(aq) <--> Br2(I) + 2e-
C. Ag(s) + Br^-1(aq) <--> AgBr(s) + 1e-
D. AgBr(s) + 1e- <--> Ag(s) + Br^-1(aq)
E. 2Ag(s) + 2Br^-1(aq) + Br2(I) <--> 2Br^-1(aq) + Br2(I)
F. 2Br^-1(aq) + AgBr(s) <--> 2Ag(s) + 2Br^-1(aq0 + Br2(I)
G. 2Ag(s) + Br2(I) <--> AgBr(s)
H. AgBr(s) <--> 2Ag(s) + Br2(I)

10.

Which is the oxidation 1/2 reation?

Br2(I) / AgBr(s)

A. Br2 + 2e- <--> 2 Br^-1
B. 2 Br^-1(aq) <--> Br2(I) + 2e-
C. Ag(s) + Br^-1(aq) <--> AgBr(s) + 1e-
D. AgBr(s) + 1e- <--> Ag(s) + Br^-1(aq)
E. 2Ag(s) + 2Br^-1(aq) + Br2(I) <--> 2Br^-1(aq) + Br2(I)
F. 2Br^-1(aq) + AgBr(s) <--> 2Ag(s) + 2Br^-1(aq0 + Br2(I)
G. 2Ag(s) + Br2(I) <--> AgBr(s)
H. AgBr(s) <--> 2Ag(s) + Br2(I)

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