Hydrogen burns in chlorine to produce hydrogen chloride. The ratio of masses of reactants in the chemical reaction is:H2 + Cl2 → 2HCl
Correct answer: A. 1:35.5
- A. 1:35.5
- B. 2:35.5
- C. 1:71
- D. 2:70
Explanation
Mass of 1 mole of H2 = 2x1= 2gMass of 1 mole of Cl2 = 2x35.5 = 71g2 : 711 : 35.5
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Mole calculations connect mass, number of particles and Avogadro's number, while balanced equations provide the mole ratios used in stoichiometry. Questions cover limiting and excess reactants, theoretical yield and percentage yield, including identifying which reactant is consumed first and comparing the actual product with the maximum possible product.
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