4.3 Quantitative chemistry

Practice questions on Quantitative chemistry

• Nitrogen gas reacts with hydrogen gas to form ammonia gas. The equation for the reaction i… (4 marks, Explain)
• A student burns magnesium ribbon in air. The magnesium reacts with oxygen gas from the air… (4 marks, Explain)
• Avogadro's law states that equal amounts in moles of gases occupy the same volume under th… (4 marks, Explain)
• A student makes a solution by dissolving potassium nitrate (KNO₃) in water. The concentrat… (4 marks, Explain)
• A student prepares magnesium oxide by burning magnesium in air. The theoretical yield of m… (4 marks, Explain)
• Zinc reacts with hydrochloric acid to produce zinc chloride and hydrogen gas. The equation… (4 marks, Explain)
• Calcium oxide (CaO) is made by heating calcium carbonate (CaCO₃) in a kiln. The equation f… (4 marks, Explain)
• Iron reacts with sulfur to form iron sulfide. The equation for this reaction is: Fe + S → … (4 marks, Explain)
• Magnesium carbonate decomposes on heating according to the equation: MgCO₃ → MgO + CO₂. Th… (4 marks, Explain)
• A student reacts zinc with dilute hydrochloric acid in an open conical flask placed on a b… (4 marks, Explain)
• A student reacts zinc with excess hydrochloric acid in a sealed container. The equation fo… (4 marks, Explain)
• Describe how Avogadro's law can be used to compare the volumes of gases produced in differ… (4 marks, Describe)
• A student heats calcium carbonate in an open crucible. The student notices that the mass o… (4 marks, Explain)
• When magnesium is burned in air, the mass of the product is greater than the mass of the m… (4 marks, Explain)
• A student dissolves iron sulfide in excess dilute sulfuric acid inside a sealed container … (4 marks, Explain)
• A student burns copper in air inside an open crucible. After the reaction, the student not… (4 marks, Explain)
• Copper reacts with oxygen when heated. The equation for this reaction is: 2Cu + O₂ → 2CuO.… (4 marks, Explain)
• A student carries out a reaction to produce copper sulfate. The theoretical yield of coppe… (4 marks, Explain)
• A student reacts zinc with excess hydrochloric acid to produce zinc chloride. The theoreti… (4 marks, Explain)
• A student reacts iron with sulfur to produce iron sulfide. The theoretical yield of iron s… (4 marks, Explain)