Carbon Dioxide And Sea water

Question 1

Equation for the reaction of rain water and limestone?

Answer 1

H2O + CO2 + CaCO3 Ca(HCO3)2

Question 2

What effect does carbon dioxide dissolved in the sea have on its acidity?

Answer 2

Decreases pH and increases acidity

Question 3

What effect does carbon dioxide concentration have on marine organisms?

Answer 3

Increased acidity due to increase in H+ ions results in decreased calcification e.g. The organisms are unable to produce their shells out of calcium carbonate
The solid shell tends to dissolve rather than form

Question 4

Equation for the reaction between carbon dioxide and water?

Answer 4

CO2 + H2O H2CO3

Product= carbonic acid