Question

as an acidic compound dissolves in water, the ph of the water
○ becomes basic.
○ decreases.
○ doesnt change.
○ increases.
○ remains neutral.

Explanation:

Acidic compounds release H⁺ ions when dissolved in water, increasing the H⁺ concentration. pH is defined as $-\log_{10}[\text{H}^+]$, so higher H⁺ concentration leads to lower pH. Thus, the pH of water decreases when an acidic compound dissolves in it.

Answer:

B. decreases.