Limewater is used to test for the presence of carbon dioxide gas. The products of the reaction of Ca(OH)2 with CO2 are calcium carbonate and water. Write a balanced equation for the reaction
The balanced equation for the reaction of calcium hydroxide (Ca(OH)2) with carbon dioxide (CO2) to form calcium carbonate (CaCO3) and water (H2O) is:
Ca(OH)2 + CO2 → CaCO3 + H2O
To write a balanced equation for the reaction between calcium hydroxide (Ca(OH)2) and carbon dioxide (CO2), we need to consider the number of atoms on both sides of the equation.
The reactants are calcium hydroxide (Ca(OH)2) and carbon dioxide (CO2).
The products are calcium carbonate (CaCO3) and water (H2O).
The unbalanced equation is:
Ca(OH)2 + CO2 -> CaCO3 + H2O
To balance the equation, we need to ensure that the number of atoms of each element is the same on both sides.
Let's balance the equation step by step:
Step 1: Balance the carbon atoms.
There is one carbon atom on the left (CO2) and one on the right (CaCO3). The carbon atoms are balanced.
Ca(OH)2 + CO2 -> CaCO3 + H2O
Step 2: Balance the hydrogen atoms.
There are two hydrogen atoms on the left (Ca(OH)2) and two on the right (H2O). The hydrogen atoms are balanced.
Ca(OH)2 + CO2 -> CaCO3 + H2O
Step 3: Balance the oxygen atoms.
On the left, there are two oxygen atoms from Ca(OH)2 and two from CO2, totaling four oxygen atoms. On the right, there are three oxygen atoms from CaCO3 and one from H2O, totaling four oxygen atoms. The oxygen atoms are balanced.
Ca(OH)2 + CO2 -> CaCO3 + H2O
The final balanced equation for the reaction between calcium hydroxide (Ca(OH)2) and carbon dioxide (CO2) is:
Ca(OH)2 + CO2 -> CaCO3 + H2O