Chemistrymedium · Past Paper
The pH of rain water is approximately 5.6. This is due to:
ADust particles
BDissolved CO2
CEvaporation
DOzone
✓ Correct Answer: B — Dissolved CO2
CO2 in the atmosphere dissolves in rain water to form weak carbonic acid, lowering the pH.
Share this question
More from Chemistry
- What is the most abundant element in the Earth's atmosphere?
- Which of the following reactions correctly represents a neutralization reaction?
- What is the reason Aluminum does not corrode easily despite being a reactive metal?
- What is the color of phenolphthalein in an acidic solution?
- The symbol 'Ag' represents which element?