Question

What does carbon dioxide do to the pH of water?(5 points) Responses Lowers the pH (More acidic) Lowers the pH (More acidic) Does not change the pH. Does not change the pH. Raises the pH (More basic)

Answer 1

Carbon dioxide (CO₂) lowers the pH of water, making it more acidic. When CO₂ dissolves in water, it reacts to form carbonic acid (H₂CO₃), which dissociates into bicarbonate (HCO₃⁻) and hydrogen ions (H⁺). The increase in hydrogen ions decreases the pH, thus making the water more acidic.

So the correct response is: **Lowers the pH (More acidic)**.