(a)For the reaction :
`2AgCl (s) + H_(2)(g) ` (1 atm) ` to 2 Ag(s) + 2H^(+) (0.1M) + 2Cl^(-) (0.1M) , DeltaG^(@) = -43600J` at `25^(@)`C.
Calculate the e.m.f. of the cell . [log `10^(-n) = -n`].
(b) Define fuel cell and write its two advantages.

Explanation

### Step-by-Step Solution:

**(a) Calculation of the e.m.f. of the cell:**

1. **Identify the Reaction:**
The reaction given is:
\[
2 \text{AgCl (s)} + \text{H}_2(g) \rightarrow 2 \text{Ag (s)} + 2 \text{H}^+ (0.1 \, \text{M}) + 2 \text{Cl}^- (0.1 \, \text{M})
...