3.3 moles and volumes Flashcards
unit conversions
cm^3 -> dm^3
divide 1000
dm3 -> cm3
X 1000
Cm3 to ml
1cm3=1ml
Idm3 to Liters
1dm3=1L
Calculate
Number of moles
with concentration and volume
Conc (mol/dm3) X vol (dm3)
What is the
ideal gas equation
PV=nRT
what are the units for
PV=nRT
P- pressure (pa)
V-volume (m3)
n- number of moles (mol)
R- ideal gas constant (J/mol/k) 8.13
T- temprature (K)
Unit conversion
kPa -> Pa
X1000
Unit conversion
K->.c
-273
When do we use the
ideal gas equation
differnet temps and pressures for greater accuracy we use the ideal gas equation
What are the assumptions made about
the ideal gas equation
- the molecules are in random motion
- elastic collisions
- negligible size
- no intermolecular forces
In PV=nRT
whats the value of the constant R
8.314
Define
A standard solution
is a solution whose concentration is known.
which glassware is used to make a standard solution.
volumetric flask
The tolerances of the volumetric flask
100cm3 volumetric flask: +/- 0.20cm3
250cm3 volumetric flask: +/- 0.30cm3