Question
Download Solution PDFWhat mass of hydrogen gas would be required to completely react with 8 g of oxygen gas to form water?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFThe correct answer is 1 g.
Key Points
- The balanced chemical equation for the formation of water is: 2H2 + O2 → 2H2O.
- The molar mass of hydrogen (H2) is approximately 2 g/mol.
- The molar mass of oxygen (O2) is approximately 32 g/mol.
- According to the equation, 1 mole (32 g) of O2 reacts with 2 moles (4 g) of H2.
- Therefore, 8 g of O2 will react with 1 g of H2 to form water.
Additional Information
- Stoichiometry
- It is the calculation of reactants and products in chemical reactions.
- Based on the law of conservation of mass, which states that mass is neither created nor destroyed in a chemical reaction.
- Molar Mass
- The mass of one mole of a substance, expressed in grams per mole (g/mol).
- Calculated by summing the atomic masses of all atoms in a molecule.
- Balanced Chemical Equation
- A chemical equation with equal numbers of atoms for each element in the reactants and products.
- Ensures the law of conservation of mass is obeyed.
- Law of Conservation of Mass
- States that mass in an isolated system is neither created nor destroyed by chemical reactions or physical transformations.
- The mass of the products in a chemical reaction must equal the mass of the reactants.
Last updated on Apr 24, 2025
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