Law of Definite Proportions
1. Which statement conforms with the law of definite proportions?
a. The mass of hydrogen is twice that of oxygen in a water molecule.
b. When mixtures of gaseous H2 and gaseous Cl2 react, a product forms that has the same properties regardless of the relative amounts of H2 and Cl2 used.
c. Several compounds have the same composition as long as they have the same ratios.
d. Compounds have similar proportions as long as they are solid.
2. A reaction of 1 L of chlorine gas (Cl2) with 3 L of fluorine gas (F2) yields 2 L of a gaseous product. All gas volumes are at the same temperature and pressure. What is the formula of the gaseous product?
3. Sulfur and oxygen can react to form sulfur dioxide. In sample 1, there are 32.06 g of sulfur and 32.00 g of oxygen. In sample 2, there are 16.03 g of sulfur. What is the mass of oxygen in sample 2? If the sulfur in sample 1 is increased by a factor of three, what mass of oxygen is needed to complete the reaction?
1. Which statement conforms with the law of definite proportions?
a. The mass of hydrogen is twice that of oxygen in a water molecule.
b. When mixtures of gaseous H2 and gaseous Cl2 react, a product forms that has the same properties regardless of the relative amounts of H2 and Cl2 used.
c. Several compounds have the same composition as long as they have the same ratios.
d. Compounds have similar proportions as long as they are solid.
2. A reaction of 1 L of chlorine gas (Cl2) with 3 L of fluorine gas (F2) yields 2 L of a gaseous product. All gas volumes are at the same temperature and pressure. What is the formula of the gaseous product?
3. Sulfur and oxygen can react to form sulfur dioxide. In sample 1, there are 32.06 g of sulfur and 32.00 g of oxygen. In sample 2, there are 16.03 g of sulfur. What is the mass of oxygen in sample 2? If the sulfur in sample 1 is increased by a factor of three, what mass of oxygen is needed to complete the reaction?
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Answer:
1• B
2• When gasses are under the same conditions (same temperature and pressure), the volume relationships between gasses, give the coefficients of the balanced equation.
3• If a 50.0 g sample of pure water (H2O) is decomposed into its component elements, ... The theoretical definite ratio of O:H in water is 8:1 ... sulfur are combined with 32.00 g of oxygen.