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Help me understand! The weight of silver (at wt.=108) displaced by a quantity of electricity which displaces 5600 mL of O2 at STP will be:

The weight of silver (at wt.=108) displaced by a quantity of electricity which displaces 5600 mL of O2 at STP will be:

  • Option 1)

    5.4 g

  • Option 2)

    10.8 g

  • Option 3)

    54.9 g

  • Option 4)

    108.0 g

 
Answers (1)
274 Views

 

Second law of electrolysis -

The masses of different substances, liberated or dissolved by the electricity are proportional to their equivalent masses.

-

 

  According to faraday secornd law

\frac{W_{Ag}}{E_{Ag}}=\frac{W_{o2}}{E_{o2}} \ or \ \frac{W_{Ag}}{108}

\frac{5600/22400 \times 32 }{8}

=>\frac{W_{Ag}}{108} = r \ or \ W_{Ag}=108


Option 1)

5.4 g

incorrect

Option 2)

10.8 g

incorrect

Option 3)

54.9 g

incorrect

Option 4)

108.0 g

correct

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