Practice: A sample of dichloromethane gas (CH2Cl2) occupies 32.6 L at 310 K and 5.30 atm. Determine its volume at STP?
In order to accurately study the effect that changes in pressure, temperature and moles have on volume, chemists will often run their experiments under Standard Temperature and Pressure conditions.
Concept #1: Standard Temperature and Pressure
Example #1: A sample of oxygen gas has a measured volume of 325 mL at STP. How many grams are present?
Concept #2: STP and Volume
Example #2: How many moles of chlorine gas occupy a volume of 15.7 L at STP?
Practice: Which gas sample has the greatest volume at STP?
Practice: Nitrogen and hydrogen combine to form ammonia via the following reaction:
1 N2 (s) + 3 H2 (g) → 2 NH3 (g)
What mass of nitrogen is required to completely react with 800.0 mL H2 at STP?
