Problem 40
Question
Write down the balanced equations for the reactions when: Carbon dioxide is passed through a suspension of lime stone in water.
Step-by-Step Solution
Verified Answer
The balanced equation is: \[ \text{CO}_2 + \text{H}_2\text{O} + \text{CaCO}_3 \rightarrow \text{Ca(HCO}_3\text{)}_2 \]
1Step 1: Write the chemical formulas
First, write down the chemical formulas for the reactants: carbon dioxide (\( \text{CO}_2 \)), limestone in water (\( \text{CaCO}_3 \)), and water (\( \text{H}_2\text{O} \)).
2Step 2: Predict the reaction products
When carbon dioxide reacts with water, it forms carbonic acid (\( \text{H}_2\text{CO}_3 \)). Carbonic acid will then react with calcium carbonate (limestone) to form calcium bicarbonate (\( \text{Ca(HCO}_3\text{)}_2 \)).
3Step 3: Write the unbalanced chemical equation
Now, write the unbalanced chemical equation reflecting these chemical changes: \[ \text{CO}_2 + \text{H}_2\text{O} + \text{CaCO}_3 \rightarrow \text{Ca(HCO}_3\text{)}_2 \]
4Step 4: Balance the chemical equation
Ensure there are equal numbers of each type of atom on both sides of the equation. In this equation, everything is already balanced:- There is 1 calcium atom on each side.- There are 2 carbon atoms on each side.- There are 4 hydrogen atoms on each side.- There are 6 oxygen atoms on each side. Thus, the balanced equation is: \[ \text{CO}_2 + \text{H}_2\text{O} + \text{CaCO}_3 \rightarrow \text{Ca(HCO}_3\text{)}_2 \]
Key Concepts
Carbon DioxideCalcium CarbonateCalcium Bicarbonate
Carbon Dioxide
Carbon dioxide, or \( \text{CO}_2 \), is a colorless gas with a slight, sharp smell and a sour taste. It is naturally present in Earth's atmosphere as a trace gas. It is critical in various chemical reactions, especially those involving carbon compounds.
When carbon dioxide dissolves in water, it reacts to form carbonic acid \( (\text{H}_2\text{CO}_3) \), which is a weak acid, but it plays a significant role in natural processes such as the carbonation of drinks and the formation of sedimentary rocks.
In the balanced chemical equation, carbon dioxide is one of the reactants that starts the reaction. Together with water, it leads to the formation of carbonic acid, which further participates in creating calcium bicarbonate.
When carbon dioxide dissolves in water, it reacts to form carbonic acid \( (\text{H}_2\text{CO}_3) \), which is a weak acid, but it plays a significant role in natural processes such as the carbonation of drinks and the formation of sedimentary rocks.
In the balanced chemical equation, carbon dioxide is one of the reactants that starts the reaction. Together with water, it leads to the formation of carbonic acid, which further participates in creating calcium bicarbonate.
Calcium Carbonate
Calcium carbonate, with the chemical formula \( \text{CaCO}_3 \), is a widely occurring compound found in rocks like limestone, marble, and chalk. It is a principal component of eggshells, snails' shells, and pearls. It is typically used in the construction industry, specifically as an ingredient in cement and concrete.
In chemical reactions, calcium carbonate can act as a base, and it reacts with acids to produce carbon dioxide. When carbon dioxide and water interact with calcium carbonate, the reaction leads to the formation of calcium bicarbonate. This process is significant, especially in geology, as it explains the formation of certain geological features like stalactites and stalagmites in caves.
In the chemical equation provided in the exercise, calcium carbonate acts as one of the primary reactants, interacting with carbon dioxide and water to yield calcium bicarbonate.
In chemical reactions, calcium carbonate can act as a base, and it reacts with acids to produce carbon dioxide. When carbon dioxide and water interact with calcium carbonate, the reaction leads to the formation of calcium bicarbonate. This process is significant, especially in geology, as it explains the formation of certain geological features like stalactites and stalagmites in caves.
In the chemical equation provided in the exercise, calcium carbonate acts as one of the primary reactants, interacting with carbon dioxide and water to yield calcium bicarbonate.
Calcium Bicarbonate
Calcium bicarbonate, represented by the chemical formula \( \text{Ca(HCO}_3\text{)}_2 \), is an intermediate compound that forms in nature as a result of the dissolution of calcium carbonate in carbonated water. It exists mainly in aqueous solutions, as it is water-soluble and does not remain in solid form like calcium carbonate.
This compound plays an important role in the natural carbonation process. When calcium bicarbonate is formed, it can further disassociate in water to contribute to water hardness, yet it's essential to many biological and ecological systems.
In the context of the given chemical equation, calcium bicarbonate is the product of the reaction between carbon dioxide, water, and calcium carbonate. It showcases how chemical processes in nature can transform substances from one form to a soluble form, facilitating various environmental processes.
This compound plays an important role in the natural carbonation process. When calcium bicarbonate is formed, it can further disassociate in water to contribute to water hardness, yet it's essential to many biological and ecological systems.
In the context of the given chemical equation, calcium bicarbonate is the product of the reaction between carbon dioxide, water, and calcium carbonate. It showcases how chemical processes in nature can transform substances from one form to a soluble form, facilitating various environmental processes.
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