the number of electrons required to deposit 1g equivalent aluminium (At. Wt. =27) from a solution of aluminium chloride will be
the number of electrons required to deposit 1g equivalent aluminium (At. Wt. =27) from a solution of aluminium chloride will be
A. 1
B. 2
C. 3
D. 4
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Correct Answer - A
`Al^(3+)+3e^(-)rarrAl`
For 27g Al electrons needed=3
For `(27)/(3)g Al` elec trons needed
`=(3)/(27)xx(27)/(3)=1` electron
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