Rainwater pH

Question 0

Rainwater is naturally acidic -

Answer 0

Unpolluted rainwater in equilibrium with CO2 has a pH of 5.65.

Question 1

pH of pure water -

Answer 1

7.0

Question 2

Carbon dioxide reacts with water to produce

Answer 2

Hydrogen H+ ions and carbonate HCO3- ions.

Question 3

Hydrogen carbonate ions can dissociate further to

Answer 3

Produce carbonate H+ ions and CO3 2- ions.

Question 4

pH can be significantly higher than 5.6 in areas where

Answer 4

Calcareous dust is blown into the atmosphere.

Question 5

Naturally occurring gaseous sulfur and nitrogen oxides from

Answer 5

Biological activity and volcanoes can lower the pH of rainwater.