Chapter 3- Moles And Volume Flashcards
1
Q
4 requirements for an ideal gas
A
Elastic collisions
No intermolecular forces
Random motion
Size of atoms relative to containers is negligible
2
Q
What is the ideal gas equation
And units
A
pV = nRT P = pressure (Pa) V = volume (m^3) n = number of moles R = ideal gas constant (8.314) T = temperature (K)
3
Q
what is the atom economy equation and what to remember
A
atom economy = sum of desired products’ Mr/ sum of all products’ Mr
include the molar ratio numbers!
4
Q
what is the percentage yield equation
A
percentage yield = (actual yield/ theoretical yield) x 100
5
Q
why might the percentage yield be lower on a reaction that produces carbon dioxide gas
A
it is slightly soluble in water
6
Q
what to remember if working with hydrated salts
A
- add on the water for Mr, e.g. in atom economy
