The ph of a solution is measured as 4.5. what is the hydrogen ion concentration of the solution? a. 4.0 × 10-5 m b. 3.2 × 10-5 m c. 4.5 m d. 3.2 × 104 m

Answer : The hydrogen ion concentration is, (B)

Explanation :

pH : It is defined as the negative logarithm of hydrogen ion concentration.

Given:

pH = 4.5

Now put the value of pH in the above expression, we get value of hydrogen ion concentration.

Thus, the hydrogen ion concentration is,