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

Consider the following cell reaction
`2Fe_((s))+O_(2(g))+4H_((aq.))^(o+)rarr2Fe_((aq.))^(+2)+2H_(2)O_((l))" "E^(@)=1.67V`
At `[Fe^(+2)]=10^(-3)M, P(O_(2))=0.1" atm and pH = 3, the cell potential at "25^(@)C` is …….
Use `(2.303RT)/(F)=0.059`

Text Solution

Verified by Experts

The correct Answer is:
1.57
`2Fe_((s))+O_(2(g))+4H^(o+)to2Fe_((aq.))^(+2)+2H_(2)O(l)`
`n=4" "impliespH=3implies[H^(+)]=10^(-3)`
`E=E^(@)-(0.059)/(4)xx log""([Fe^(+2)]^(2))/([H^(+)]^(4)(Po_(2)))=1.67-(0.059)/(4)xxlog""((10^(-3))^(2))/((10^(-3))^(4)(0.1))=1.57" V"`
Promotional Banner

Topper's Solved these Questions

  • MOCK TEST 8

    VMC MODULES ENGLISH|Exercise CHEMISTRY (SECTION 2)|5 Videos

  • MOCK TEST 7

    VMC MODULES ENGLISH|Exercise CHEMISTRY (SECTION 2)|5 Videos

  • MOCK TEST 9

    VMC MODULES ENGLISH|Exercise CHEMISTRY (SECTION 2)|5 Videos

Similar Questions

Explore conceptually related problems

Consider the following cell reation : 2Fe(s)+O_(2)(g)+4H^(o+)(aq) rarr 2Fe^(2+)(aq)+2H_(2)O(l)" "E^(c-)=1.67V At[Fe^(2+)]=10^(-3)M,p(O_(2))=0.1atm and pH=3 . The cell potential at 25^(@)C is (a) 1.47V (b) 1.77V (c) 1.87V (d) 1.57V

Consider the following cell reaction. 2Fe(s)+O_(2)(g)+4H^(+)(aq)rarr2Fe^(2+)(aq)+2H_(2)O(l), E^(@)=1.67V At [Fe^(2+)]=10^(-3)M,P(O_(2))=0.1 atm and pH=3, the cell potential at 25^(@)C is

Consider the following cell reaction 2Fe(s)+O_(2)(g)+4H^(+)(aq) rarr 2Fe^(2+)(aq)+2H_(2)O(l) If E_("cell")=E_("cell")^(@) at 25^(@)C and [Fe^(2+)]=10^(-3)M,P_(O_(2))=0.01 atm and pH=x value of x is

Balanced the following equations: H_(2)O_(2)+H^(o+)+Fe^(2+)rarr H_(2)O+Fe^(3+)

The equivalent weight of FeS_(2) in the following reaction is FeS_(2)+O_(2) rarr Fe^(+3)+SO_(2)

Complete the following chemical equations : (i) MnO_(4)^(-) (aq) + S_(2)O_(3)^(2-) (aq) + H_(2) O(l) to1 (ii) Cr_(2)O_(7)^(2-) (aq) + Fe^(2+)(aq) + H^(+) (aq) to

Balance the following redox reactions by ion-electron method. H_(2)O_(2)(aq)+Fe^(2+)(aq)toFe^(3+)(aq)+H_(2)O(l) (in acidic solution)

Delta_rG^@ for the cell with the cell reaction : Zn_((s))+ Ag_2O_((s)) + H_2O_((l)) to Zn_((aq))^(2+) + 2Ag_((s)) + 2OH_((aq))^(-) [E_(Ag_2O // Ag)^(@)=0.344 V, E_(Zn^(2+)//Zn)^@=-0.76 V]

Which of the following statements is correct about the reaction given below:- 4Fe(s)+3O_(2)(g)rarr2Fe_(2)O_(3)(g)

Which of the following statements is correct about the reaction given below:- 4Fe(s)+3O_(2)(g)rarr2Fe_(2)O_(3)(g)

Knowledge Check

  • Delta_rG^@ for the cell with the cell reaction : Zn_((s))+ Ag_2O_((s)) + H_2O_((l)) to Zn_((aq))^(2+) + 2Ag_((s)) + 2OH_((aq))^(-) [E_(Ag_2O // Ag)^(@)=0.344 V, E_(Zn^(2+)//Zn)^@=-0.76 V]

    A
    `2.13xx10^5 "J mol"^(-1)`
    B
    `-2.13xx10^5 "J mol"^(-1)`
    C
    `1.06xx10^5 "J mol"^(-1)`
    D
    `-1.06xx10^5 "J mol"^(-1)`