3.3 Moles and Volumes Flashcards
1
Q
What is concentration measured in?
A
mol dm-3
2
Q
What is a standard solution?
A
A solution if known concentration
3
Q
What is molar gas volume?
A
Volume per moles of gas molecules at a stated pressure and temperature
4
Q
What is the RTP and pressure in molar gas volume?
A
RTP = 20°C Pressure = 101 kPa
5
Q
What are the assumption made for the molecules making up an ideal gas?
A
- random motion
- negligible size
- elastic collisions
- no intermolecular forces
6
Q
What is the ideal gas equation?
A
pv = nRT
p= pressure (Pa) v = volume (m3) n= amount of gas molecules (mol) R = ideal gas constant (=8.31 J mol-1 K-1) T = temperature (K)
7
Q
How do you convert from cm3 to m3?
A
x 10^-6
8
Q
How do you convert from dm3 to m3?
A
x 10^-3
9
Q
How do you convert from °C to K?
A
+ 273
10
Q
How do you convert from kPa to Pa?
A
x 10^
11
Q
What is the real gas equation? (An improved ideal gas equation)
A
(p +n^2/uV^2)(V - nb) = nRT
n^2/uV^2 accounts for intermolecular forces
nb accounts for gas molecules
