Thirsty for Knowledge: Understanding Gas Stoichiometry
Gas Stoichiometry: A Brief Overview
Gas stoichiometry is the branch of chemistry that deals with the relationships between the amounts of reactants and products in a gas-phase chemical reaction. It involves using the principles of stoichiometry to calculate the quantities of gases involved in chemical reactions.
The Ideal Gas Law
The ideal gas law is an important equation that relates the pressure, volume, temperature, and amount of a gas sample. It is expressed as:
pV = nRT
where:
p is the pressure of the gas,
V is the volume of the gas,
n is the number of moles of gas,
R is the ideal gas constant, and
T is the temperature of the gas in Kelvin.
Practice Problem
If you have 3.50 moles of carbon dioxide at STP, how many liters will it occupy?
(2.) How many liters are occupied by 3.50 mol carbon dioxide at STP? Answer: 84 dm³ Explanation: 1 mole of any gas occupies 24 litres or 24 dm³ of volume at RTP or STP, so the volume occupied by 3.50 moles of carbon dioxide is: 3.5 x 24 = 84 litres or 84 dm³