What is an example of an Ideal gas law practice problem?
Answers
Breathing is something our bodies have been doing since we were born. We can calculate the pressure, volume, temperature, and amount of gas we inhale and exhale. Before we do a calculation involving breathing, let's learn more about the ideal gas law.
First off, what is an ideal gas? In physics and chemistry, scientists derive equations for perfect-case scenarios because, it many cases, situations are so close to ideal that we can assume they are ideal. An ideal gas is a gas where the gas particles are in a giant container bouncing into and off each other when they collide, like microscopic billiard balls. Also, the gas's temperature and kinetic energy (energy of motion) are proportional.
The ideal gas law relates pressure, volume, the molar amount of the gas, and its temperature
Example 1
5 moles of nitrogen gas is in a 100 liter fixed cylinder at 300 Kelvin. What is the pressure of the gas?
It's often a good idea to rearrange equations to solve for the variable being asked about. In this case, we need to get the equation in the form of P = . . . We'll do that after we organize the values we'll need.
P = ?
V = 100 L
n = 5 moles
R = 0.08205 L⋅atm / mole⋅K
T = 300 K
Alright, so let's begin with formula PV = nRT and change that appropriately so it now is P = nRT/V. Now we can plug in the values to determine the pressure. We get:
P_calc
Simple!
I hope its helpful to you