Stoichiometry of Gases Worksheet

Stoichiometry of Gases

Read each question carefully and provide detailed answers. Show all your work for calculations.

1. What is the molar volume of an ideal gas at Standard Temperature and Pressure (STP)?

2. State Avogadro's Law and explain its significance in gas stoichiometry.

3. The ideal gas law is represented by the equation PV = nRT, where R is the  .

4. In a chemical reaction involving gases, the coefficients in the balanced equation represent the   of the reacting gases.

5. If 2.0 moles of H₂ gas react completely with 1.0 mole of O₂ gas according to the equation 2H₂(g) + O₂(g) → 2H₂O(g), what volume of H₂O(g) would be produced at STP?

6. Which of the following conditions represents Standard Temperature and Pressure (STP)?

7. Calculate the volume of carbon dioxide gas produced at 25°C and 1.2 atm when 50.0 g of calcium carbonate reacts completely with an excess of hydrochloric acid. The balanced chemical equation is: CaCO₃(s) + 2HCl(aq) → CaCl₂(aq) + H₂O(l) + CO₂(g). (Molar mass of CaCO₃ = 100.09 g/mol)

8. A 3.0 L container holds oxygen gas at 2.0 atm and 27°C. If the temperature is increased to 127°C and the pressure remains constant, what is the new volume of the gas?