Ocean Acidity and Chemical Reactions

The video tutorial explores the significance of ocean acidity, focusing on its chemical reactions and impact on marine life, particularly pteropod shells. It explains the role of carbonic acid and equilibrium reactions, highlighting Le Chatelier's Principle. The tutorial also discusses historical ocean pH levels and future predictions, emphasizing the increasing acidity and its implications.

Why is ocean acidity important for marine life?

• It changes the color of the ocean.

• It impacts the structural integrity of marine organisms' shells.

• It influences the growth of marine plants.

• It affects the temperature of the ocean.

What is formed when carbon dioxide reacts with water in the ocean?

• Hydrochloric acid

• Nitric acid

• Carbonic acid

• Sulfuric acid

What happens to carbonic acid in the ocean?

• It turns into a gas.

• It evaporates into the atmosphere.

• It undergoes a dissolution reaction.

• It forms a solid precipitate.

What is the primary component of pteropod shells?

• Calcium sulfate

• Sodium bicarbonate

• Calcium carbonate

• Magnesium chloride

How does Le Chatelier's principle relate to shell dissolution?

• It predicts the color change in shells.

• It describes the equilibrium shift due to concentration changes.

• It explains the increase in shell mass.

• It determines the temperature of the ocean.

What is the solubility product constant (Ksp) for calcium carbonate?

• 5 times 10 to the minus 9

• 5 times 10 to the minus 7

• 5 times 10 to the minus 5

• 5 times 10 to the minus 3

What has been the historical pH level of the ocean for millions of years?

• 9.0

• 8.18

• 7.0

• 6.5

What is the predicted pH level of the ocean by 2100?

• 7.0

• 9.0

• 7.8

• 8.5

How much more acidic is the ocean today compared to 300 million years ago?

• 75%

• 10%

• 25%

• 50%

By what percentage is the ocean expected to be more acidic by 2100?

• 150%

• 126%

• 100%

• 50%