ElectrochemistryHard
Question
A galvanic cell is set up from a zinc bar weighing 100 g and 1.0 L of 1.0 M copper sulphate solution. How long would the cell run if it is assumed to deliver a steady current of 1.0 A? (Zn = 65.4)
Options
A.53.6 h
B.26.8 h
C.81.97 h
D.40.99 h
Solution
neq of Zn = $\frac{100}{65.4} \times 2 = 3.058$
neq of CuSO4 = $1.0 \times 2 = 2.0\left( \text{L.R.} \right)$
$\because n_{eq} = \frac{Q}{F} \Rightarrow 2 = \frac{1.0 \times t}{96500} $$$\Rightarrow t = 193000\text{ sec = 53.6 hr}$$
Create a free account to view solution
View Solution FreeMore Electrochemistry Questions
The EMF for the cell: Ag(s)|AgCl(s)|KCl(0.2 M)||KBr (0.001 M)|AgBr(s)|Ag(s) at 25°C is (Ksp(AgCl) = 2.0 × 10−10; Ksp(AgB...Ostwald′s dilution law is application on :...The same current is passed through acidulated water and stannous chloride solution. What volume of dry detonating gas at...A depolarizer used in dry cell batteries is...Select correct statement:...