Answer:
Moles of magnesium produced via this electrolysis is 3.8798 moles.
Step-by-step explanation:
we know that the relation between current and charge is given by
I=Q/t
where
I=Current consumed
Q=amount of charge produced
t=time
Given,
amount of current passed (I)=13A
Total time (t)= 16 h
moles of magnesium=?
we know the electrolysis equation of magnesium chloride'
Mg+2 + 2e- -------> Mg
which says that, 2 coloumbs of charge required to produce 1 mole of magnesium.
we can caluclate the charge produced from the given data using the relation I=Q/t
13A=Q/16*60*60
Q=748,800 coloumbs
=748,800/96500 F (1F=96500C)
Q=7.76 F
from the electrolysis equation, 2F charge produces 1 mole of magnesium.Similarly,
moles of magnesium produced by 7.76F charge =7.76/2=3.387 moles