General Chemistry | Ideal Gas Law (PV=nRT) [Example #2]

The video tutorial explains how to solve gas law problems by selecting the appropriate gas constant based on given units. It demonstrates calculating pressure using the ideal gas law, emphasizing the importance of unit conversion and cancellation. The tutorial concludes with key reminders for solving such problems, including converting temperature to Kelvin and choosing the correct gas constant.

Why is it important to choose the correct gas constant in gas law problems?

• To make the calculation easier

• To ensure the units of pressure are consistent with the given data

• To avoid using a calculator

• To reduce the number of variables

What is the first step in solving for pressure using the ideal gas law?

• Multiply the volume by the temperature

• Add the number of moles to the gas constant

• Subtract the temperature from the volume

• Divide both sides by the volume

Which units are canceled out when solving for pressure in the ideal gas law?

• Kilopascals and liters

• Kelvin and atmospheres

• Moles and Kelvin

• Liters and atmospheres

What should you always remember to do with temperature in gas law problems?

• Convert it to Fahrenheit

• Convert it to Kelvin

• Leave it as given

• Convert it to Celsius

How many variables are typically given in gas law problems, and how many do you need to solve for?

• Three given, solve for two

• Two given, solve for three

• Four given, solve for one

• Five given, solve for none