2 Amounts of substance - Equations Flashcards
1
Q
What does it mean when a solution is standard?
A
The concentration is known
2
Q
What does avogardos constant mean?
A
The amount of atoms in a mole of an element
3
Q
Dilutions formula
A
C1V1=C2V2
where 1 values are the original concentrtation and volume
4
Q
Concentrations formula
A
concentration = moles/volume
5
Q
Atom economy equation
A
Atom Economy = mass of desired products / total mass of reactants
- you must use the balancing number
6
Q
Ideal gas equation
A
PV=nRT
- P (Pa)
- V (m²)
- n (mol)
- R (8.31)
- T (K)
7
Q
Assumptions made for the ideal gas equation
A
- Particles move randomly
- Particles experience no IMF
- No. of molecules in a gas is very large
- Total number of molecules is very small compared with the gas volume
- Gases at the same temperature and pressure will take up the same volume as long as they have the same amount of moles
8
Q
°c to K
A
+ 273
9
Q
What is the limiting reagent?
A
The reagent which is not in excess, it runs out first and determines the amount of product produced from the reaction
