How many grams of carbon dioxide can be obtained from the action of 100.0 g of sulfuric acid on 100.0 g of calcium carbonate??
I need helpim stuck!
This is a limiting reagent problem. I know that because amounts are given for BOTH reactants. Here is a worked example of a limiting reagent problem. Just follow the steps.
http://www.jiskha.com/science/chemistry/limiting_reagent_problem.html
To determine the number of grams of carbon dioxide generated, we need to use stoichiometry, which is a way of understanding the ratios of reactants and products in a chemical reaction.
1. Begin by writing a balanced chemical equation for the reaction between sulfuric acid (H₂SO₄) and calcium carbonate (CaCO₃):
H₂SO₄ + CaCO₃ → CO₂ + CaSO₄ + H₂O
The equation indicates that one mole of sulfuric acid reacts with one mole of calcium carbonate to produce one mole of carbon dioxide.
2. Calculate the molar mass of each substance:
- Molar mass of H₂SO₄ = 98.08 g/mol
- Molar mass of CaCO₃ = 100.09 g/mol
- Molar mass of CO₂ = 44.01 g/mol
3. Determine the number of moles for sulfuric acid and calcium carbonate by dividing the given mass by their respective molar masses:
- Moles of H₂SO₄ = 100.0 g / 98.08 g/mol
- Moles of CaCO₃ = 100.0 g / 100.09 g/mol
4. Identify the limiting reactant. The limiting reactant is the one that will be completely consumed, thus determining the maximum amount of product that can be formed. To do this, compare the mole ratios between the reactants and the product. In this case, the mole ratio is 1:1.
The reactant that produces fewer moles of carbon dioxide is the limiting reactant. Calculate the moles of CO₂ that can be formed from each reactant:
- Moles of CO₂ from H₂SO₄ = Moles of H₂SO₄
- Moles of CO₂ from CaCO₃ = Moles of CaCO₃
Compare the two amounts to determine the limiting reactant.
5. Calculate the mass of carbon dioxide formed from the limiting reactant:
- Mass of CO₂ = Moles of CO₂ from the limiting reactant × Molar mass of CO₂
Once you have gone through these steps, you will have the answer for the number of grams of carbon dioxide that can be obtained from the given reactants.