The lower the hydrogen ion concentration, the higher the pH, closer to 0.
Answer: Option (A) is the correct answer.
Explanation:
The relation between pH and hydrogen ion concentration is as follows.
pH = [tex]-log [H^{+}][/tex]
When pH ranges between 1 to 6.9 then the solution is acidic in nature.
When pH is equal to 7 then solution is 7.
When pH ranges between 7.1 to 14 then the solution is basic in nature.
Hence, when there occurs a decrease in the concentration of [tex]H^{+}[/tex] ions. Then there will be an increase in pH of the solution.
Thus, we can conclude that the lower the hydrogen ion concentration, the higher the pH.
