Ask a Doubt
Request a call back

Join NOW to get access to exclusive study material for best results

CBSE Class 12-science Answered

Why is the value of standard electrode potential of Mn, Co,Ni,Zn more negative than expected? Is  the standard electrode potential more negative than expected for cobalt?   (according to graph pg217 NCERT chemistry)  
Asked by prakriti12oct | 15 Feb, 2020, 08:21: PM
answered-by-expert Expert Answer
Metals will easily lose electrons and oxidised.
Negative electrode potential value means oxidised species is more stable than reduced species.
Mn and Zn have half filled and completely filled d orbitals. It gives them stability and not get reduced.
 
Ni has high negative hydration enthalpy.
 
Therefore the value of standard electrode potential of Mn, Zn, Ni is more negative.
Answered by Varsha | 16 Feb, 2020, 12:32: AM

Concept Videos

Multiple Choice Questions Practice Test
Answered Unanswered My Questions My Answers
CBSE 12-science - Chemistry
What is a cell constant
Asked by rajpatil | 19 Jun, 2020, 07:12: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Chemistry
Electrochemical series are the series of element in which the elements are arranged in ........order of their reducing strength
Asked by piyushkhariyal | 06 Mar, 2020, 10:36: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Chemistry
Why is the value of standard electrode potential of Mn, Co,Ni,Zn more negative than expected? Is  the standard electrode potential more negative than expected for cobalt?   (according to graph pg217 NCERT chemistry)  
Asked by prakriti12oct | 15 Feb, 2020, 08:21: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Chemistry
why does copper have positive electrode potential? it has same inthalpy of ionisation(2) as nickel(-2121) so it should also have a negative value
Asked by prakriti12oct | 11 Nov, 2019, 12:09: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Chemistry
The discharge potential of Chloride ions is less than hydroxide ions . what does this line mean and why chloride has less discharge potential. 
Asked by govtsecschoolnayaganv051 | 05 Nov, 2019, 04:50: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Chemistry
Please answer this question.
question image
Asked by Balbir | 21 Aug, 2019, 09:14: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Chemistry
A Cu rod is dipped in 0.1M CuSo4 solution.Calculate the potential of this half cell if CuSo4 undergoes 90% dissociation at 25 C.
Asked by ankitathapliyal097 | 24 Jul, 2019, 10:05: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Chemistry
Please give the series of increasing ease of getting discharged at anode? 
Asked by govtsecschoolnayaganv051 | 26 Jun, 2019, 02:18: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Chemistry
Plzzzzzz help me in this... (Refer to attachment)
question image
Asked by jhajuhi19 | 01 May, 2019, 09:03: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Chemistry
CALCULATE  POTENTIAL  OF  HYDROGEN  ELECTRODE IN  CONTACT  WITH  A  SOLUTION  OF  PH 10
Asked by pardeepkumar2281 | 26 Sep, 2018, 09:00: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
My Class Videos Tests ₹ Plans Ask a Doubt
Get Latest Study Material for Academic year 24-25 Click here
×