Home
Class 12
CHEMISTRY
Consider the following cell reaction : 2...

Consider the following cell reaction : `2Fe_((s)) + O_(2(g)) + 4H_((aq))^(+) to 2Fe_((aq))^(2+) + 2H_2O_((l)), E^(0) = 1.67 V `
At `[Fe^(2+)] = 10^(-3) M , P_((O_2)) = 0.1 atm ` and `pH=3 `, the cell potential at ` 25^(@) C ` is

A

`K_(C) = 2.63 xx 10^(56)`

B

`K_(C) = 1.54 xx 10^(26)`

C

`E_("cell")^(@) = 1.16 V`

D

`E_("cell")^(@) = 1.67 V `

Text Solution

Verified by Experts

The correct Answer is:
A, D
`cell = Fe//Fe_((1M))^(+2)////H_((1M))^(oplus), H_2O // H_((g))^(2) Pt , E_("cell")^(0) = 1.23 + 0.44 = 1.67 V` , `E_("cell")^(@) = (0.0591)/(n) log K_(c)`
` 1.67 = (0.0591)/(2) log K_(c) , K_(c) = 2.63 xx 10^(56)`
Promotional Banner

Topper's Solved these Questions

  • ELECTROCHEMISTRY

    AAKASH SERIES|Exercise PRACTICE SHEET -4 (LINKED COMPREHENSION TYPE QUESTIONS (PASSAGE-I))|3 Videos

  • ELECTROCHEMISTRY

    AAKASH SERIES|Exercise PRACTICE SHEET -4 (LINKED COMPREHENSION TYPE QUESTIONS (PASSAGE-II))|3 Videos

  • ELECTROCHEMISTRY

    AAKASH SERIES|Exercise PRACTICE SHEET -3 (INTEGER ANSWER TYPE QUESTIONS )|6 Videos

  • DILUTE SOLUTIONS

    AAKASH SERIES|Exercise EXERCISE - 1.2|55 Videos

  • ELEMENTS OF D - BLOCK

    AAKASH SERIES|Exercise EXERCISE - 5.2|33 Videos

Similar Questions

Explore conceptually related problems

Balance the following equations. 4) Fe+O_(2)rarr Fe_(2)O_(3)

Balance the following chemical equations. ii) Fe_(2)O_(3(s))+C_((s))rarr Fe_((s))+CO_(2(g))

Balance the following equations Fe + H_2O to Fe_3O_4 + H_2

For the reaction 2H_(2)O_((l)) rarr H_(3)O_((aq))^(+) + OH_((aq))^(-) , the value of Delta H is

The half cell reaction for the corrosion are , 2H^(+) + (1)/(2) O_2 + 2e^(-) to H_2O , E^(0) = 1.23 V and Fe^(2+) + 2e^(-) to Fe(s) , E^(0) = -0.44 V . Find the DeltaG^(0) ( in kJ) for the overall reaction

The cell in which the following cell reaction occurs, 2Fe _((aq))^(3+)+2I_((aq))^(-)to 2Fe _((aq))^(2+)+I_(2(s)) has E_(cell)^(0)=0.236V at 298 K. Calculate the standard Gibbs energy and the equilibrium costant of the cell reaction.

Balance the following equation in acid medium by Ion-electron method : Fe_("(aq)")^(+2) + Cr_(2) O_(7 "(aq)")^(2-) to Fe_("(aq") ^(3+)j + Cr_("(aq))^(+3)