If a substance has a pH of 4 is it acidic or basic What type

If a substance has a pH of 4, is it acidic or basic. What type of ion is it going to give off when dissolved in water?

Solution

If a substance has a pH of 4, it is acidic in nature.

An acid donates hydrogen ions. So,when this acid is dissolved in water (H₂O), the balance between hydrogen ions and hydroxide ions is shifted. There will be more hydrogen ions rather than hydroxide ions in the solution. This kind of solution is called acidic solution.

H₂O -----------------> H⁺ + OH^-

Note:

If,

pH < 7 = Acidic in nature

pH = 7 = Neutral solutions

pH > 7 = Basic / Alkaline in nature