Question

How does increasing the concentration of one ion influence the current and driving force of another ion? Explain your reasoning.

Answer 1

In case of an electrolyte the current is formed due to the movement of ions that are present. The negatively charged ions move towards the positively charged ions and thus current is generated. Actually the ions flow towards the opposite charge due to the potential difference that exist. If the charge is neutral, ie the number of oppositely charged ions are equal then there won't be any flow and the current will be zero. In certain cells we use system called saltbridge inorder to provide ions so that it won't neutralise. So any change in concentration will influence the diving force and so the current.