Mass-Mass, Mass-Volume, and Volume-Volume Calculations in Reactions
Chemistry ⇒ Stoichiometry and Chemical Calculations
Mass-Mass, Mass-Volume, and Volume-Volume Calculations in Reactions starts at 11 and continues till grade 12.
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Describe how to determine the limiting reactant in a mass-mass stoichiometric problem.
Describe the steps required to calculate the mass of a product formed from a given mass of reactant in a chemical reaction.
Explain why it is important to use a balanced chemical equation in stoichiometric calculations.
A mixture of 10.0 g of sodium reacts with 10.0 g of chlorine gas to form sodium chloride. Which is the limiting reactant? (Na = 23.0, Cl = 35.5) 2Na + Cl2 → 2NaCl
A reaction of 10.0 g of potassium chlorate (KClO3) decomposes to form potassium chloride and oxygen gas. Calculate the volume of O2 produced at STP. (K = 39.1, Cl = 35.5, O = 16.0) 2KClO3 → 2KCl + 3O2
A reaction of 2.00 g of hydrogen gas with excess nitrogen produces ammonia. Calculate the mass of ammonia formed. (H = 1.0, N = 14.0) N2 + 3H2 → 2NH3
A reaction produces 5.60 L of oxygen gas at STP. How many grams of O2 is this? (O = 16.0)
A sample of 3.00 g of magnesium reacts with hydrochloric acid. Calculate the volume of hydrogen gas produced at STP. (Mg = 24.3) Mg + 2HCl → MgCl2 + H2
Which law allows you to relate the volumes of gases in a chemical reaction at constant temperature and pressure? (1) Boyle's Law (2) Avogadro's Law (3) Charles's Law (4) Dalton's Law
Which of the following best describes a mass-mass stoichiometric calculation? (1) Calculating the mass of a product from the mass of a reactant (2) Calculating the volume of a gas from the mass of a solid (3) Calculating the number of moles from the volume of a solution (4) Calculating the concentration of a solution from its mass
Which of the following is a correct statement about volume-volume calculations for gases at the same temperature and pressure? (1) The volume ratio is the same as the mole ratio (2) The volume ratio is always 1:1 (3) The volume ratio depends on the molar mass (4) The volume ratio is not related to the balanced equation
Which of the following is a necessary step in a volume-volume calculation involving gases? (1) Convert volume to mass (2) Use the mole ratio as the volume ratio (3) Find the density of the gas (4) Use the molar mass of the gas
Fill in the blank: In the reaction N2 + 3H2 → 2NH3, the ratio of the volume of hydrogen to ammonia produced is ________.
Fill in the blank: The balanced equation for the combustion of methane is CH4 + 2O2 → CO2 + ________.
Fill in the blank: The balanced equation for the reaction of sodium with water is 2Na + 2H2O → 2NaOH + ________.
Fill in the blank: The mass of 1.00 mol of CO2 is ________ g. (C = 12.0, O = 16.0)
True or False: In a chemical reaction, the limiting reactant determines the maximum amount of product that can be formed.
True or False: In a mass-volume calculation, you can use the molar volume of a gas at STP to convert between moles and volume.
True or False: In a mass-volume calculation, you must always convert mass to moles before using the molar volume of a gas.
True or False: In a volume-volume calculation involving gases at the same temperature and pressure, the coefficients in the balanced equation can be used directly as volume ratios.
