A sample of air was bubbled into water. The PH of the water slowly changed from 7 to 6. Which of the following gases in the samples caused the change?
carbon(iv)oxide
carbon(ii)oxide
nitrogen
oxygen
Correct answer is A
An acid gas is any gaseous compound which, when dissolved in water, will form an acidic solution
The most common acid gases are hydrogen sulfide (H2S) and carbon dioxide (CO2) gases