Answer Happy

1) Consider the following: Cl2
--> ClO3 - . The
balanced half-reaction is __
2) Which of the following reactions
is spontaneous?
A. Fe + Mn+2 --> Mn +
Fe+2
B. Fe + Cu+2 --> Cu +
Fe+2
C. Fe + Mg+2 --> Mg +
Fe+2
D. Fe + Zn+2 --> Zn +
Fe+2
3) A voltaic cell is based on
the following half-cell reactions.
In+3 + 2e --> In+
E= -0.395 V
Br2 + 2e --> 2
Br - E = +1.065 V
Determine the cell notation and calculate the standard cell
potential.
A. Br2 | Br- || In+3,
In+ | Pt ; +0.670 V
B. Br2 | Br- || In+3,
In+ | Pt ; +0.925 V
C. Pt | In+, In+3 ||
Br2 | Br- | Pt ; +1.460
V
D. In+, In+3 || Br2 |
Br -| Pt ; +0.771 V
4) Which of the following cell notation is CORRECT for an
electrochemical cell with the given net reaction?
2 Sn+4 + 2 Al --> 3
Sn+2 + 2 Al+3
A. Sn+4 | Sn+2 ||
Al+3 | Al
B. Al | Al+3 || Sn+4,
Sn+2 | Pt
C. Pt | Sn+4,Sn+2 ||
Al+3 | Al
D. Al | Al+3 || Sn+4 |
Sn+2