AP EAPCET 19-Aug-2021 Shift 1 Paper

Given current, i=10A
Time, t=1.608‌min or 96.5s
Wejght of aluminium WAl=?
Atomic weight of aluminium =27g∕mol(M)
We know that, AlCl3→Al3++3Cl−,n=3
At cathode, reduction Al3++3e−→Al
Formula, WAl=

ε×i×i

96500

, where E=

M

n

WAl=

27

3

×

10×96.5

96500

WAl=0.09g
Mass of Al deposited will be 0.09g