Stoichiometry of Gases Worksheet

Stoichiometry of Gases

Read each question carefully and provide the best answer. Show all your work for calculations.

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

2. In the reaction 2H₂(g) + O₂(g) → 2H₂O(g), if 4 liters of H₂ react, how many liters of O₂ are consumed?

3. Avogadro's Law states that equal volumes of all gases, at the same temperature and pressure, have the same number of  .

4. The conditions of 0°C (273.15 K) and 1 atmosphere (atm) of pressure are known as  .

5. Explain how the coefficients in a balanced chemical equation for gaseous reactions can represent both mole ratios and volume ratios.

6. A reaction produces 5.6 L of CO₂ gas at STP. How many moles of CO₂ were produced? (Show your work)

7. For reactions involving gases, the mole ratio is always equal to the volume ratio, regardless of temperature and pressure.

8. Observe the image below of a gas syringe. If the volume of gas in the syringe is reduced by half at constant temperature and moles, what happens to the pressure inside the syringe?