Chemistry Module 2

Question 1

What is an ideal gas?

Answer 1

One that follows a set of assumptions about the behaviour of gases.

Question 2

What is assumption one of ideal gases?

Answer 2

Gases contain a large number of molecules in random and rapid motion, moving in a straight line until they hit the wall of the container from which they bounce off.

Question 3

What is assumption two of ideal gases?

Answer 3

The molecules of gas occupy a negligible volume of the container in which they are in.

Question 4

What is assumption three of ideal gases?

Answer 4

The molecules of a gas experience no forces except when they collide with each other and the walls of a container.

Question 5

What is the ideal gas law?

Answer 5

PV = nRT

Question 6

Explain the components of the ideal gas law.

Answer 6

P = pascals or kilopascals (kPa)
V= volume (L)
n= number of moles of gas
R= the ideal gas constant (8.314 J mol-1 K-1)
T= Temperature (K)

Question 7

Why do we use then ideal gas law?

Answer 7

It links all we care about in a gas into one equation.

Question 8

How do you convert celsius to kelvin?

Answer 8

Add 273.15 to degrees.