What will be the most likely change in pH when the H+ ions in the solution is increased to twice its original concentration?

Question

Quizplus · Accepted Answer

Doubling the concentration of H+ ions in a solution increases its acidity, which decreases the pH. However, the pH scale is logarithmic, meaning each unit change represents a tenfold change in H+ ion concentration. Doubling the H+ concentration (a factor of 2, not 10) results in a relatively small change in pH. Among the options, a change from 1.6 to 1.3 is the most realistic representation of this effect.

What Will Be the Most Likely Change in PH When