Question

Which statement is true for a solution when its concentration of hydroxide ions increases?

A) It becomes more acidic.
B) It becomes less alkaline.
C) Its pH value increases.
D) Its pH value decreases.

Answer 1

A solution when its concentration of hydroxide ions increases, its pH value decreases.

What is pH?

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

The acid is becoming less acidic. Similarly, when an alkali is diluted with water the concentration of OH - ions decreases. This causes the pH of the alkali to fall towards 7, making the solution less alkaline as more water is added.

Hence, option D is correct.

Learn more about pH here:

https://brainly.com/question/24031539?referrer=searchResults

#SPJ2