Module 2 Chapter 3 Flashcards
Avagadros constant
6.02 x 10^23
water of crystallization
water molecules that are part of a crystalline structure
how are liquids and gasses measured
by volume
equation for moles with a given concentration and volume
mol = concentration(in mol/dm^3) x volume(in dm^3)
how do you convert between moles and grams
rearrange moles = mass/MR to mass = moles x MR to calculate mass in grams
molar gas volume
volume per mol of gas molecules at a stated temperature and pressure (usually RTP)
RTP
about 20 degrees Celsius and 101kpa (1atm)
what is the volume of 1 mole of gas molecules at RTP
24.0dm^3 or 240000cm^3
what equation is used to convert between amount of moles of gas and volume of gas
mol = volume/molar gas volume
ideal gas equation
P(pa) x V(m^3) = N(mol) x R x T(k)
cm^3 to m^3
x10^-6
dm^3 to m^3
x10^-3
celcius to kelvin
+ 273
stoichiometry
ratio of amount of moles of each substance in the balanced equation
what is percentage yield
converting of starting materials into a desired product
equation for atom economy
sum of molar masses of desired products/sum of molar masses of all products x 100
percentage yield equation
actual yield/theoretical yield x 100
define atom economy
a measure of how well atoms have been utilised
benefits of reactions with high atom economies
they make a high amount of desired products an a little amount ton waste product
they are important for sustainability as they make the best use of natural resources.
