Rainwater pH Flashcards
0
Q
Rainwater is naturally acidic -
A
Unpolluted rainwater in equilibrium with CO2 has a pH of 5.65.
1
Q
pH of pure water -
A
7.0
2
Q
Carbon dioxide reacts with water to produce
A
Hydrogen H+ ions and carbonate HCO3- ions.
3
Q
Hydrogen carbonate ions can dissociate further to
A
Produce carbonate H+ ions and CO3 2- ions.
4
Q
pH can be significantly higher than 5.6 in areas where
A
Calcareous dust is blown into the atmosphere.
5
Q
Naturally occurring gaseous sulfur and nitrogen oxides from
A
Biological activity and volcanoes can lower the pH of rainwater.
