Question

Water in contact with air is acidic, rather than neutral,

dueto dissovled carbon dioxide. Water in equilibrium with theair
contains 4.4 X 10 -5% CO2. Theresulting
carbonic acid, H2 CO3 , gives thesolution a
hydrogen ion concentration of 2.0 X10-6M , about 20
times larger than thatof pure water. Calculate the pH of the
solution.

Answer 1

5.7

Step-by-step explanation:

The pH can be calculated by:

pH = -log[H⁺]

Where [H⁺] is the concentration of hydrogen ions. The pH is a way to identify if the solution is an acid or a base. When pH is equal to 7, the solution is neutral, when it is less than 7, it is acid, and when it is larger than 7, it's a base.

So, for the acid solution given, [H⁺] = 2.0x10⁻⁶ M

pH = -log(2.0x10⁻⁶)

pH = 5.7