Home
Class 12
CHEMISTRY
100mL of 0.3 M Fe^(3+)(aq) ions were ele...

`100mL` of `0.3 M Fe^(3+)(aq)` ions were electrolyzed by a charge of `0.072F.` In electrolysis, metal was deposited and `O_(2)(g)` was evolved. At the end of electrolysis, it is desired to oxidize the un`-`electrolyzed metal ion.
`Fe^(3+)+e^(-) rarrFe^(2+)`
`Fe^(2+)+2e^(-)rarrFe`
The moles of `Fe^(2+)` ions left un`-`electrolyzed in the solution is
`a. 0.009" "b.0.021" "c.0.072" "d.0.042`

Promotional Banner

Similar Questions

Explore conceptually related problems

Given standard E^(c-): Fe^(3+)+3e^(-)rarrFe," "E^(c-)=-0.036 Fe^(2+)+2e^(-)rarr Fe," "E^(c-)=-0.440V The E^(c-) of Fe^(3+)+e^(-) rarr Fe^(2+) is

Given standard E^(c-): Fe^(3+)+3e^(-)rarrFe," "E^(c-)=-0.036 Fe^(2+)+2e^(-)rarr Fe," "E^(c-)=-0.440V The E^(c-) of Fe^(3+)+e^(-) rarr Fe^(2+) is

The ratio of Fe^(3+) and Fe^(2+) ions in Fe_(0.9)9S_(1.0) is

Assertion (A) : Fe^(3+) (g) ion is more stable than Fe^(2+)(g) ion. Reason (R) : Fe^(3+) ion has more number of unpaired electrons than Fe^(2+) ion.

Assertion (A) : Fe^(3+) (g) ion is more stable than Fe^(2+)(g) ion. Reason (R) : Fe^(3+) ion has more number of unpaired electrons than Fe^(2+) ion.