Reactions in the environment

Question 1

how does an increase in CO2 result in ocean acidity

Answer 1

more CO2 dissolves in the ocean, therre is an increased concentration of carbonic acid which reacts with H20 to produce H3O+, decreasing pH

Question 2

carbonic acid formula

Answer 2

H2CO3

Question 3

equation to show CO2 dissolving in oceans

Answer 3

CO2 (g) ⇌ CO2 (aq)

Question 4

equation to show how carbonic acid is formed

Answer 4

CO2 (aq) + H2O(l) ⇌ H2CO3 (aq)

Question 5

equation to show how carbonic acid results in ocean acidity

Answer 5

1. H2CO3 (aq) + H2O(l) ⇌ H3O+(aq) + HCO3-(aq) 2. HCO3 (aq) + H2O(l) ⇌ H3O+(aq) + CO32-(aq)

Question 6

calcification

Answer 6

when aquatic orggansims absorb calcium and carbonate ions to build a protective covering made out of calcium carbonate, essental for survival

Question 7

calcium carbonate formula

Answer 7

CaCO3

Question 8

calcification formula

Answer 8

Ca2+(aq) + CO32-(aq) ⇌ CaCO3 (s)

Question 9

decalcification

Answer 9

the reacttion between hydronium and carbonate ions that decreases the cooncentration of carbonate ions in sea water, making it difficult for marine creates to build or maintain their protective structures

Question 10

equation to show decalcification

Answer 10

H3O+(aq) + CO3 2- (aq) ⇌ HCO3-(aq) + H2O(l)