Home
Class 12
CHEMISTRY
The concentration of potassium ions ins...

The concentration of potassium ions inside a biological cell is at least twenty times higher than the outside. The resulting potential difference across the cell is important in several processes such as transmission of nerve impulses and maintaining the ion balance. A simple mode for such a concentration cell involving a metal `M` is :
`M_((s))|M_((aq.))^(@) 0.05"molar"||M_((aq.))^(@) 1"molar"|M_((s))`
For the above electrolytic cell the magnitude of the cell potential `|E_(cell) | = 70mV`
For the above cell :

A

`E_(cell) lt 0 , Delta G gt 0`

B

`E_(cell) gt 0 , Delta G lt 0`

C

`E_(cell) lt 0 , Delta G^(@) gt 0`

D

`E_(cell) gt 0 , DeltaG^(@) lt 0`

Text Solution

Verified by Experts

The correct Answer is:
B
`underset((1M))(M^(+)) to underset((0.05M))(M^(+))`
Applying Nernst equation
`E = E^(@) - (0.059)/(1) "log" (0.05)/(1)`
`E = - (0.059)/(1) "log" (5 xx 10^(-2)) = 0.076`
`E = +ve or gt 0 , Delta G = -ve` or `lt 0`
Promotional Banner

Topper's Solved these Questions

  • ELECTROCHEMISTRY

    MODERN PUBLICATION|Exercise COMPETITION FILE (OBJECTIVE TYPE QUESTIONS) MATRIX MATCH TYPE QUESTIONS|3 Videos

  • ELECTROCHEMISTRY

    MODERN PUBLICATION|Exercise COMPETITION FILE (OBJECTIVE TYPE QUESTIONS)Matching Type Questions|1 Videos

  • ELECTROCHEMISTRY

    MODERN PUBLICATION|Exercise COMPETITION FILE (OBJECTIVE TYPE QUESTIONS) C MULTIPLE CHOICE QUESTIONS|10 Videos

  • D AND F-BLOCK ELEMENTS

    MODERN PUBLICATION|Exercise UNIT PRACTICE TEST|12 Videos

  • GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

    MODERN PUBLICATION|Exercise COMPETION FILE (Integer Type Numerical Value Type Questions)|5 Videos

Similar Questions

Explore conceptually related problems

The concentration of potassium ions inside a biological cell is at least 20 times higher than outside. The resulting potential difference across the cell is important in several processes such as transmission of nerve impulses and maintaining the ion balance. A simplel model for a concentration cell involving a metal M is M(s)|M^(o+)(aq,0.05 molar )||M^(o+)(aq,1 molar )|M(s) For the abov electrolytic cell, the magnitude of the cell potential is |E_(cell)|=70mV. For the above cell

The concentration of potassium ions inside a biological cell is at least 20 times higher than outside. The resulting potential difference across the cell is important in several processes such as transmission of nerve impulses and maintaining the ion balance. A simplel model for a concentration cell involving a metal M is M(s)|M^(o+)(aq,0.05 molar )||M^(o+)(aq,1 molar )|M(s) For the abov electrolytic cell, the magnitude of the cell potential is |E_(cell)|=70mV. If the 0.05 moolar solution of M^(o+) is replaced by a 0.0025 molar M^(o+) solution, then the magnitude of the cell potential would be