3
$\begingroup$

Concise Physics mentions that:

Higher the concentration of the electrolyte greater is the internal resistance(in a cell).

I think that higher the concentration of the electrolyte higher would be the number of ions present and therefore greater would be the conductance of the electrolyte leading to lower resistance.But the book mentions the opposite. So my question is how does higher concentration leads to higher internal resistance in the cell? OR Is it wrongly given in the book?

Improve this question
$\endgroup$
2
  • $\begingroup$ The book is in all likelihood incorrect. It happens. $\endgroup$
    – Gert
    Commented Dec 27, 2021 at 23:49
  • 1
    $\begingroup$ Please provide more information. What kind of battery are we talking about? What kind of electrolyte? What is the concentration? Is it diluted with water? $\endgroup$
    – joseph h
    Commented Dec 28, 2021 at 0:46

1 Answer 1

Reset to default
1
$\begingroup$

My first guess would be that the book may be mistaken. I personally carried out an experiment where I used different concentrations of HCl as an electrolyte and saw how the internal resistance changes accordingly. Turns out that there is a negative correlation between the two variables, where the higher the concentration of the electrolyte (in my case the acid), the lower the internal resistance. This was because of the larger number of conducting ions in the acid causing an increase in current and therefore a decrease in internal resistance.

Improve this answer
$\endgroup$
1

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.