Home
Class 12
CHEMISTRY
निम्नलिखित सेल अभिक्रिया पर विचार कीजिए ...

निम्नलिखित सेल अभिक्रिया पर विचार कीजिए `2Fe(s) + O_2(g) + 4H^(+)(aq) to 2Fe^(2+)(aq) + 2H_2O(l)`
`E^@ = 1.67 V`
`[Fe^(2+)] = 10^(-3) M, P(O_2) = 0.1 atm` और `pH = 3` पर, `25^@C` पर सेल विभव है

A

`1.77 V`

B

`1.57 V`

C

`1.87 V`

D

`1.47V`

Text Solution

Verified by Experts

The correct Answer is:
B
`2Fe(s) + O_(2)(g) + 4H^(+)(aq)`
`to 2Fe^(2+) (aq) + 2H_2O(1)`
`N = 4` (उपस्थित इलेक्ट्रॉनों के मोलों की संख्या)
ननर्स्ट समीकरण से,
` E_("cell") = E_("cell") - (0.591)/(n) log Q`
`= 1.67 - (0.0591)4 "log log"`
`((10^(-3))^(2))/(0.1 xx (10^(-3))^(4)) [(H^(+)] = 10^(-pH)]`
`= 1.67 - 0.106 = 1.57 V`
Promotional Banner

Similar Questions

Explore conceptually related problems

Consider the following cell reaction: 2Fe(s)+O_(2) (g) + 4H^(+)(aq)to2Fe^(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 :

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 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

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

Consider the followng 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