A quantity of electricity liberates 3.6g of Silver from its salt. What mass of aluminium Will be liberated from its salt by the same quantity of electricity? [Al = 27, Ag = 108].

A quantity of electricity liberates 3.6g of Silver from its salt. What mass of aluminium Will be liberated from its salt by the same quantity of electricity? [Al = 27, Ag = 108].
A. 2.7g
B. 1.2g
C. 0.9g
D. 0.3g

Correct Option: Answer is D
Solution:
Ag+ + e− = Ag
96500 of Ag = 108
X of Ag = 3.6
Therefore 96500 × 3.6 = 108X
347400 = 108X
X = 3216.7
Al3+ + 3e = Al
3 x 96500 of Al = 27
3216.7 of Al = X
289500X = 86850.9
X = 0.3

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