Analytical Techniques Studied

The Mole

Taken from Nelson Chemistry pg 4

The mole is the basis of all our calculations.

When in doubt, calculate the number of moles present

Unit Conversions - Temperature

When converting from Celsius to Kelvin add 273 degrees

When converting from Kelvin to Celsius subtract 273 degrees

Taken from Nelson Chemistry pg 5

Taken from Nelson Chemistry pg 5

Unit Conversions – Mass & Volume

Taken from Nelson Chemistry pg 5

When converting pressure, convert to atmospheres before converting to mm of mercury or pascals/kilopascals

Key Formulae

PV = nRTC1V1 = C2V2

V = n × Vm

• P = Pressure (kilopascals)• V = Volume (L)• n = moles• R = 8.31 J mol-1 K-1

• T = Temperature (°K)• C = Concentration (M)• m = mass (g)• Mr = molar mass

• Vm = molar volume

€

n =m

Mr

n = C × V

Molar volume:22.4L at STP24.5L at SLC