if 1g of carbon dioxide is bubbled into 100g of a calcium hydroxide solution in a flask. what is the total mass of substance in the flask after the reaction is complete?
To determine the total mass of the substance in the flask after the reaction is complete, we need to understand the chemical reaction that occurs between carbon dioxide (CO2) and calcium hydroxide (Ca(OH)2).
The balanced chemical equation for the reaction is:
CO2 + Ca(OH)2 → CaCO3 + H2O
From the equation, we can see that one molecule of CO2 reacts with one molecule of Ca(OH)2 to form one molecule of CaCO3 and one molecule of H2O.
To find the total mass of the substance in the flask, we need to consider the molar masses and quantities of the reactants and products involved in the reaction.
The molar mass of CO2 is approximately 44 grams/mol, and the molar mass of Ca(OH)2 is approximately 74 grams/mol.
Given that 1 gram of CO2 is bubbled into 100 grams of a Ca(OH)2 solution, we need to find the number of moles for each substance.
Number of moles of CO2 = Mass of CO2 / Molar mass of CO2
= 1 g / 44 g/mol
≈ 0.0227 mol
Number of moles of Ca(OH)2 = Mass of Ca(OH)2 / Molar mass of Ca(OH)2
= 100 g / 74 g/mol
≈ 1.35 mol
From the balanced chemical equation, we can see that the reaction ratio between CO2 and Ca(OH)2 is 1:1. This means that for every 1 mole of CO2, 1 mole of Ca(OH)2 is consumed.
Since we have 0.0227 moles of CO2, only 0.0227 moles of Ca(OH)2 will react.
After the reaction is complete, the reactants are fully consumed and converted into products. Therefore, only the products remain in the flask, which are CaCO3 and H2O.
The molar mass of CaCO3 is approximately 100 grams/mol.
Total mass of substances in the flask after the reaction is complete can be calculated as follows:
Mass of CaCO3 = Number of moles of CaCO3 × Molar mass of CaCO3
= 0.0227 mol × 100 g/mol
≈ 2.27 g
Mass of H2O = Number of moles of H2O × Molar mass of H2O
= 0.0227 mol × 18 g/mol
≈ 0.41 g
Therefore, the total mass of substance in the flask after the reaction is complete is approximately 2.27 grams of CaCO3 and 0.41 grams of H2O.