Podcast
Questions and Answers
What chemical species are formed when carbon dioxide ($CO_2$) dissolves in water?
What chemical species are formed when carbon dioxide ($CO_2$) dissolves in water?
- Hydroxide ions ($OH^−$) and hydronium ions ($H_3O^+$)
- Carbon monoxide ($CO$) and hydrogen gas ($H_2$)
- Bicarbonate ions ($HCO_3^−$) and carbonate ions ($CO_3^{2−}$) (correct)
- Carbonic acid ($H_2CO_3$) and oxygen ($O_2$)
The carbon dioxide equilibrium system in water allows for the interconversion between which substances?
The carbon dioxide equilibrium system in water allows for the interconversion between which substances?
- Carbon monoxide, hydrogen gas, and methane.
- Carbonic acid, hydroxide ions, and hydronium ions.
- Elemental carbon, oxygen gas, and water.
- Carbon dioxide, bicarbonate ions, and carbonate ions. (correct)
What is the significance of the carbon dioxide equilibrium system in aquatic environments?
What is the significance of the carbon dioxide equilibrium system in aquatic environments?
- It determines the water's salinity.
- It dictates the rate of photosynthesis.
- It buffers changes in pH. (correct)
- It controls the water's temperature.
If the concentration of $CO_2$ increases in water, what is the likely immediate effect on the concentrations of bicarbonate and carbonate ions, assuming other factors remain constant?
If the concentration of $CO_2$ increases in water, what is the likely immediate effect on the concentrations of bicarbonate and carbonate ions, assuming other factors remain constant?
Which of the following is LEAST likely to affect the equilibrium between carbon dioxide, bicarbonate ions, and carbonate ions in a body of water?
Which of the following is LEAST likely to affect the equilibrium between carbon dioxide, bicarbonate ions, and carbonate ions in a body of water?
Flashcards
Bicarbonate (HCO3-) and Carbonate (CO3^2-)
Bicarbonate (HCO3-) and Carbonate (CO3^2-)
CO2 reacts with water to form these ions.
CO2 Equilibrium in Water
CO2 Equilibrium in Water
A state where CO2 and its ion forms (bicarbonate, carbonate) interconvert.
Reversible Reaction
Reversible Reaction
The ability of a reaction to proceed in both the forward and reverse directions.
What substances are the products of CO2 and water?
What substances are the products of CO2 and water?
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What influences the balance of CO2 and its ions?
What influences the balance of CO2 and its ions?
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Study Notes
- When carbon dioxide (CO2) dissolves in water, it chemically reacts to produce bicarbonate ions (HCO3-) and carbonate ions (CO32-).
- Bicarbonate and carbonate ions are components of the carbon dioxide equilibrium system in water.
- These ions can interconvert with CO2, contingent on environmental conditions.
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Description
Carbon dioxide reacts with water to produce bicarbonate and carbonate ions. These ions are components of the carbon dioxide equilibrium system in water. The ions interconvert with CO2, contingent on environmental conditions.
