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What will be the amount \mathrm{(in\ g)} of iron metal deposited at cathode when through an aqueous solution of non \mathrm{(II)} bromide \mathrm{SF} of electricity was passed ?

Option: 1

\mathrm{65\ g}


Option: 2

\mathrm{112\ g}


Option: 3

\mathrm{140\ g}


Option: 4

\mathrm{168\ g}


Answers (1)

best_answer

\mathrm{\mathrm{Fe}^{2+}+2 \mathrm{e}^{-} \rightarrow \mathrm{Fe}}
\mathrm{E_{\mathrm{Fe}}=\frac{56}{2}=28}
\mathrm{\begin{aligned} W_{F e} & =E_{F e} \times \text { no. of } F \\ & =28 \times 5 \\ & =140 \mathrm{~g} \end{aligned}}

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shivangi.shekhar

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