Question

Which of the following is true for an acid-base concentration cell such as the one used by the pH meter?

• A. Current always flows towards the more acidic solution
• B. Current always flows towards the more basic solution
• C. Current always flows towards the more neutral solution
• D. Current always flows away from the more neutral solution

Hint:

In electrochemical cells, current flows from low concentration to high concentration to balance the charge difference.

Answer 1

The Correct Option is A

In an acid-base concentration cell, the current always flows from the lower concentration solution to the higher concentration solution, which in this case is the more acidic solution.