Question

$13.5g$ of $Al$ get deposited when electricity is passed through the solution of $AlC{l}_3$. The number of faradays used are ______.

• A. $0.50$
• B. $1.00$
• C. $1.50$
• D. $2.00$

Answer 1

Answer: (C)

$1.50$

$A{l}^{3+}+3e^{-}\to Al$

$1moleofAl\to 27$

$13.5isgivenwhichis0.5mole$

$1mole=30faraday$

$0.5mole=?$

$=0.5\times 30$

$=1.50faraday$