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zinc granules are added in excess to 500 ml of 0.1M Ni(NO3)2 solution at 25 0 C until equilibrum is reached. if standard reduction potential of Zn 2+ /Zn and Ni 2+ /Ni are -0.75 and -0.024 volt respetively .find conc of Ni 2+ ions in the solutions at equilibrium. ans:5.6X10 -18 M

zinc granules are added in excess to 500 ml of 0.1M Ni(NO3)2 solution at 250C until equilibrum is reached.


if standard reduction potential of  Zn2+/Zn   and Ni2+/Ni     are -0.75 and -0.024 volt respetively .find conc of  Ni2+   ions in the solutions at equilibrium.


 


 


 


 


 


 


ans:5.6X10-18M



Grade:12

1 Answers

SAGAR SINGH - IIT DELHI
878 Points
13 years ago

Dear shreya,

\Delta E=\Delta E^{o}- {\mbox{RT} \over \mbox{nF}} \mbox{ln Q}\,

Assuming standard conditions (Temperature = 25 C\,) and R = 8.3145 {J \over K mol} the equation above can be expressed as:

\Delta E=\Delta E^{o}- {\mbox{0.0592 V} \over \mbox{n}} \mbox{log Q}\,
On plugging in the values we will obtain the concentration of nickel ions to be 5.6X10-18M.

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Sagar Singh

B.Tech, IIT Delhi


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