Please wait...
Contact Us
Contact
Need assistance? Contact us on below numbers

For Study plan details

10:00 AM to 7:00 PM IST all days.

For Franchisee Enquiry

OR

or

Thanks, You will receive a call shortly.
Customer Support

You are very important to us

For any content/service related issues please contact on this number

93219 24448 / 99871 78554

Mon to Sat - 10 AM to 7 PM

during finding half cell electrode potential by nernst equation whether cofficent is used as raise to power or not ?

Asked by Eng.surinder.singh 14th June 2018, 1:22 PM
Answered by Expert
Answer:
Nernst equation is:
 
For Metal-Metal ion half cell:
 
straight M subscript open parentheses straight s close parentheses end subscript space space space leftwards harpoon over rightwards harpoon space space straight M to the power of straight n plus end exponent space space space plus space space ne

Oxidation space Potential semicolon
straight E subscript straight M divided by straight M to the power of straight n plus end exponent end subscript space equals space straight E to the power of ring operator subscript straight M divided by straight M to the power of straight n plus end exponent end subscript space space space minus space fraction numerator 0.059 over denominator straight n end fraction log space space fraction numerator open square brackets straight M to the power of straight n plus end exponent close square brackets over denominator open square brackets straight M close square brackets end fraction

As comma space open square brackets straight M close square brackets space equals space Unity

straight E subscript straight M divided by straight M to the power of straight n plus end exponent end subscript space equals space straight E to the power of ring operator subscript straight M divided by straight M to the power of straight n plus end exponent end subscript space minus space fraction numerator 0.059 over denominator straight n end fraction log space space open square brackets straight M to the power of straight n plus end exponent close square brackets

Rducation space Potential semicolon

straight E subscript RP space space equals space straight E to the power of ring operator subscript RP space plus space fraction numerator 0.059 over denominator straight n end fraction log space space open square brackets straight M to the power of straight n plus end exponent close square brackets

Example colon

Calculate space emf space of space half space cells colon

Pt space straight H subscript 2 space space vertical line space space HCl space space space space space space space space straight E to the power of degree subscript OP space equals space 0 space straight V
2 space atm space space 0.02 space straight M

straight H subscript 2 space space rightwards arrow space 2 straight H to the power of plus space plus space 2 straight e to the power of minus

straight E subscript OP space equals space straight E to the power of ring operator subscript OP space space space minus space fraction numerator 0.059 over denominator straight n end fraction log space space fraction numerator open square brackets straight H to the power of plus close square brackets squared over denominator open square brackets straight P subscript straight H subscript 2 end subscript close square brackets end fraction

space space space space space space space space equals space 0 space minus fraction numerator 0.059 over denominator 2 end fraction log space space fraction numerator open square brackets 0.02 close square brackets squared over denominator open square brackets 2 close square brackets end fraction

space space space space space space space space equals space plus 0.109 space straight V
Answered by Expert 15th June 2018, 10:27 AM
Rate this answer
  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10

You have rated this answer /10

Your answer has been posted successfully!

Chat with us on WhatsApp