Topic 5 Equations Flashcards
1
Q
Concentration (gdm^-3)
A
mass = vol x conc.
2
Q
Concentration (moldm^-3)
A
n = vol x conc.
3
Q
Uncertainty in titrations calculation
A
Uncertainty x 100/titre
4
Q
Calculation with 24
A
vol = n x 24 or room temp gas = vol/24
Equal volumes of gases under the same conditions of temperature and pressure contain the same number of molecules.
5
Q
Avogadros calculation
A
atoms = moles x avos constant
6.022 × 10²³
6
Q
Ideal gas equation
A
pV = nRT
p= pressure (Pa)
V= volume (m^3/ x10-6)
n= no. of moles
R= gas constant (8.31) (JK^-1mol^-1)
T= temperature (+273) (K)
7
Q
A mole definition
A
Number of particles found in 12g of carbon-12
8
Q
Ionic equations
A
-Start with the full equation
-Replace the formulae of ionic compounds by the separate ions
-Delete any ions that appear identically on both sides.
9
Q
Density
A
