The concentration ofpotassium 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 If the 0.05 molar solution of M^(+) is replaced by 0.0025 molar M^(+) solution, then the magnitude of the cell potential would be :

The concentration ofpotassium ions inside a biological cell is at leas

1.	The concentration ofpotassium 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 If the 0.05 molar solution of M^(+) is replaced by 0.0025 molar M^(+) solution, then the magnitude of the cell potential would be :
Answer» `35 mV` `70 mV` `140 mV` `700 mV` Solution :In this case `E_(cell) = (0.059)/(1)"log"_(10)([1.0])/(2.5 xx 10^(-3))` `= 0.152 V` or `APPROX 140 mV`